California Hot Springs - A Selfish Guide

This is a summary of hot springs in California from viewpoint of my family living in Menlo Park, San Francisco Bay Area -- listed in order of travel time from home.

One site claims California has 304 hot springs.

NOAA National Geophysical Data Center List, June 1980:
http://members.peak.org/~skinncr/hotsprings/noaa_thermal_springs_list.pdf
Interactive Map of NOAA List:
http://acme.com/jef/hotsprings/
http://davidwoolsey.com/mapping/hotsprings/mb/ca.html
NOAA List accssible via NOAA:
http://www.ngdc.noaa.gov/hazard/geotherm.shtml
Site with search engine:
http://soak.net/
California Hot Springs Guide:
http://www.totalescape.com/active/leisure/hotspr/prim.html
Another presentation of the NOAA National Geophysical Data Center list:
http://www.hotspringsenthusiast.com/California.asp
Useful guide:
http://studentreader.com/california-hot-springs/
http://hotspringsoak.com/
1915 notes:  http://www.mocavo.com/Springs-of-California/
http://digitalrockhound.blogspot.com/2009/08/california-hot-springs.html
Resorts of Lake County By Donna Hoberg, 2007, https://books.google.com/books?id=H_9hCi1XilsC
http://find.mapmuse.com/directory/hot-springs/ca
http://www.volcanic-springs.com/
ftp://ftp.consrv.ca.gov/pub/oil/publications/TR15_pt2.pdf
http://studentreader.com/northern-california-hot-springs/
https://books.google.com/books?id=0tF7-l903RYC Touring California and
Nevada Hot Springs by Matt C. Bischoff


Alameda Warm Springs
80°F / 27°C
Not hot enough to be interesting.
End of Hidden Valley Terrace, Warm Springs District, southernmost
Fremont, CA, below Mission Peak.
37.502983, -121.907041
This is the eponymous warm springs of Warm Springs District, Fremont, in
the former Rancho Agua Caliente.  Dumbarton Bridge to I-880 south to
Mission Blvd. west to the hills, right on Stanford Ave., right again
on Hidden Valley Terrace, and it's on the right before the end.
1915 note:  Four warm springs that issue on the hillside bordering the
lowland at the southeast end of San Francisco Bay have given the small
town of Warm Springs its name. They are situated about 2 miles northeast
of the town, within the private grounds of Mr. Joseph W.  Stanford. One
of the springs rises in the lawn adjacent to Mr.  Stanford’s residence.
It has been inclosed to form a covered reservoir about 12 feet square,
which furnishes part of the domestic supply and yields perhaps 5 gallons
a minute. Two other springs rise beside a walk a few yards away, in open
basins, from which there are flows of approximately 1 and 4 gallons. The
larger of these two springs has a temperature of 86°. The fourth spring
is 200 yards southward, in a little swale on the southern side of a
knoll. It yields perhaps 5 gallons a minute, of water 90° in
temperature, which is collected in a small covered reservoir and piped
to the grounds for domestic and garden use.
Season: year-round
Cost: access is unknown
Distance: 25.1 miles, 37 mins

Mineral Springs
84°F / 29°C
Not hot enough to be interesting.
37.399457, -121.796865
http://www.yelp.com/biz/alum-rock-park-san-jose?hrid=-QTXOtBLQK4rAI-cIW9EJw
Alum Rock Park, San Jose, Santa Clara County, CA
US-101 to I-680 to Alum Rock Ave, to the park.
Enter Alum Rock Park, park where Penetencia Creek Trail begins.
Walk 1/10 mile along that trail.  It will be to the left, where the
creek is.
Season: year-round
Cost: $6 park admission
Distance: 32.6 miles, 44 mins

Rocky Point Springs / Steep Ravine Hot Spring / Red Rock Hot Spring
90°F / 32°C
Not hot enough to be interesting.
37.880, -122.627
https://web.archive.org/web/20070314232024/http://www.sfbg.com/nudebeaches/marin.php
http://www.yelp.com/biz/rocky-point-hot-springs-muir-beach
http://hotspringsdirectory.blogspot.com/2004/07/red-rock-hot-spring.html
Right on the Marin County coast between Muir Beach and Stinson Beach,
and accessible only at very low (-.5') tide, at the end of the Dipsea Trail, at
the very north end of Steep Ravine Beach.  Hardly seems worth the
danger of getting swept out to sea, even after you brave the slippery
and dangerous trail to the beach.  Mile marker 1120 on Hwy. 1 just north
of Steep Ravine Campground.  Tub can hold up to 24 people.
1915 note:  In the Coast Ranges north of San Francisco Bay are a number
of thermal springs that form a general group in the older sediments
of this part of the State. A warm spring that is mildly sulphureted
rises on the beach about 6 miles northwest of Point Bonita. It is
locally known as Rocky Point Spring, but it is exposed only at low
tide and is of little importance.
Season: year-round
Cost: free
Distance: 53 miles, 1 hr 22 mins: GG Bridge to Marin, CA1 to coast.

Gilroy Yamato Hot Springs
CLOSED
13800 Gilroy Hot Springs Road, Gilroy, Santa Clara County, CA
106°F / 41°C
37.108, -121.478
Needs long and detailed reconstruction, but it was once wonderful, and
some day may be again.  Just west of Henry W. Coe State Park.
1915 note:  Gilroy Hot Spring is situated on the side of Coyote Creek
canyon,
in the southeastern part of Santa Clara County. The spring, which
has an observed temperature of 110° and a flow of perhaps 15 gallons
a minute, issues in a ravine on the western side of the canyon, 200
feet above Coyote Creek.
The spring has been used as a resort since the seventies, and in
1908 a hotel, annex, and cottages provided rooms for about 125 guests.
From a cemented and covered reservoir that has been excavated at the
spring the water flows into two small plunge baths and is also piped to
bathtubs. Besides its use for bathing, the water is much used for
drinking and has been carbonated and bottled for a number of years by
the soda works at Gilroy.
http://gilroyyamatohotsprings.org/
Season: n/a
Cost: n/a
Distance: 63 miles, 1 hr 16 mins: S, off US-101, east into foothills

Sulphur Spring
75°F / 24°C
Not hot enough to be interesting.
37.924, -122.046
http://ww2.kqed.org/quest/2012/08/09/what-is-that-unusual-smell-in-walnut-creek/
At the entrance to St John Vianney Church, 1650 Ygnacio Valley Rd, just
west of Heather Farms Park.  Some sources say near Clarke Swim Center inside
Heather Farms Park.
Historically, this was Ygnacio Sibrian’s Sulphur Springs Ranch, on which
Dr. A.H. Rowan built a hotel and spa called Bareges Sulphur Springs,
destroyed by fire in 1875.
http://ww2.kqed.org/quest/2012/08/09/what-is-that-unusual-smell-in-walnut-creek/
https://www.facebook.com/cityofwalnutcreek/photos/a.381738229377.161206.93294874377/10151363544559378/
Season: year-round
Cost: access is unclear
Distance: 58.6 miles, 1 hr 2 mins

Unnamed Spring (Deer Spring?)
Lime Ridge, Walnut Creek, Contra Costa County, CA
'warm'
Not hot enough to be interesting.
37.929, -121.965
Ygnacio Valley Road over Lime Ridge to right onto Pine Hollow Road,
right on Rolling Woods Way, left on Crystyl Ranch Road, right on Deer
Creek Circle.  The spring is alleged to be east of the east point of the
street.
Season: year-round
Cost: access is unclear
Distance: 64.2 miles, 1 hr 13 mins

Crohare Spring
Livermore, Alameda County, CA
70°F / 21°C
Not hot enough to be interesting.
37.632, -121.76
South of town towards Wente Vineyards, Arroyo Road to Arroyo Del Valle
Regional Trail, trail about 1/5 mile.
Cost: free
Distance: 38.2 miles, 52 mins

Marsh Creek Springs
70°F / 21°C
Not hot enough to be interesting.
37.895, -121.874
Marsh Creek Road to just past where Morgan Territory Road branches
south, on the east side of Mount Diablo.
Season: year-round
Cost: access is unclear
Distance: 70.5 miles, 1 hr 22 mins

Byron Hot Springs
CLOSED
5400 Byron Hot Springs Rd, Byron, Contra Costa County, CA
96°F / 36°C
37.847, -121.635
http://www.atlasobscura.com/places/byron-hot-springs-hotel
http://www.byronhotsprings.com/
https://wheretheghostsgo.wordpress.com/2012/09/17/the-byron-hotel-byron-ca/
http://www.sfgate.com/news/article/Developer-has-grand-plan-for-crumbling-resort-3186220.php
http://www.messynessychic.com/2014/08/22/trespassing-hotel-california/
CA-4 to J4 Byron Highway to right on Byron Hot Springs Road.  Ruins
of a grand old resort that owners still dream of reopening.  Even
though it's an academic point as the property is off-limits, urban
explorers report seeing no current spring emissions.
1915 note:  On the western border of San Joaquin Valley, near the
southeastern corner of Contra Costa County, a number of mineralized
springs -— Byron Hot Springs —- rise in a saline flat that is partly
inclosed by low hills. A large, well-appointed hotel (this hotel was
destroyed by fire in July, 1912, but the resort was not closed, and a
new hotel was opened in July, 1914) and four or five cottages have here
formed one of the most noted spring resorts of the State. The place is
easily reached by automobile from the eastern side of San Francisco Bay.
In 1908 eight springs were improved and used. A small warm sulphur
spring supplies a drink- ing basin in the main grounds; warm sulphur mud
and water baths and a sulphur plunge are about 250 yards southeast of
the hotel grounds. A strongly sulphureted spring, 83° in temperature,
forms a slightly used drinking pool at one side of Sulphur Plunge, and
on the opposite side is a well from which mineral water is pumped to
bathtubs in the hotel. In the summer of 1908 the water in this well
stood about 8 feet below the surface and its temperature was 112° to
115°. About 250 yards beyond the Sulphur Baths and Sulphur Plunge is an
inclosed swimming pool, known as the Gas Plunge, in which the
temperature is about 88°. Between the two bathing establishments are two
cemented drinking springs, known as the Hot Salt and the Liver and
Kidney springs. The Hot Salt Spring, with a temperature of 120° and a
flow of about 2 gallons a minute, rises in a small, domed, concrete
house; the Liver and Kidney Spring rises in a concrete basin 25 yards
southward. In 1908 its temperature was 73°, but its flow was not
appreciable. Near the base of a low hill 250 yards to the southwest is a
tile-lined basin or well, marked “Surprise,” which contains strongly
saline water about 70° in temperature.
Season: year-round
Cost: private property, for now
Distance: 67.1 miles, 1 hr 18 mins

Lone Tree Mineral Spring
West of Vernalis, San Joaquin County, CA
73°F / 23°C
Not hot enough to be interesting.
37.573, -121.445
Somewhere near 33000 S. Corral Hollow Road.  Look from Middle Fork, Lone
Tree Creek and Sulphur Spring Gulch.
Season: year-round
Cost: access is unclear
Distance: 79.4 miles, 1 hr 44 mins

Salt Grass Springs
West of Patterson, Stanislaus County, CA
73°F / 23°C
Not hot enough to be interesting.
37.432, -121.308
Off the south side of the road near 11562 to 11616 Del Puerto Canyon
Road.
Season: year-round
Cost: access is unclear
Distance: 97 miles, 1 hr 52 mins

Boyes Hot Springs, now enclosed by Fairmont Sonoma Mission Inn and Spa
100 Boyes Boulevard, Sonoma, Sonoma County, CA
Two sources:  112°F / 44°C and 135°F / 57°C
38.312893, -122.482663
http://www.fairmont.com/sonoma/
Main pool is seasonal.
1915 note:  A number of small warm springs issue along Sonoma Creek, a
few miles north of San Pablo Bay. Artesian wells that also yield warm
water have been drilled at several places on the eastern side of Sonoma
Valley, and at three places where such wells have been obtained resorts
have been built up that are well patronized during the summer months, as
they are only a two and a half hours’ ride by train from San Francisco.
Boyes Hot Springs, about 2 miles northwest of Sonoma, is the
southernmost of these resorts. Here a hotel and several cottages and
tent houses are situated in a grove of oaks, and a quarter of a mile
northwest of the hotel a large swimming plunge and tub baths are
supplied by water pumped from two wells. These are said to be 200 feet
deep, and the temperature of the water is reported to be 114° and 118°.
The wells, the first of which was drilled about 1890, flowed until a
short time after the earthquake of April 18, 1906, but the water usually
stands a few feet below the surface. A third, unused well 300 or 400
yards to the east was flowing about 3 gallons a minute in December,
1909. The water is bottled for table use.
Season: year-round
Cost:  If you have to ask, you can't afford it.  In theory, you might be able to buy a day pass at the Fairmont's Willow Stream Spa subsidiary.
Distance: 77 miles, 1 hr 34 mins: N of S.F. Bay

Ohms Spring
Sonoma County, CA
About one-half mile southeast of Boyes Hot Springs is another
drilled well whose water was used to some extent in 1909 for bathing.
The property was open to the public under the name of Ohms Spring,
and accommodations were provided for about 20 guests.

Agua Caliente Springs
Sonoma County
1915 note:  About 1 mile northwest of Boyes Hotel a similar resort has
been built up at Agua Caliente Springs. A hotel and cottages here
provide for about 300 people. A large swimming plunge and tub baths are
supplied by five flowing wells one-third of a mile southward.  The wells
are drilled about 300 feet deep and the reported temperatures of the
waters range from 97° to 108°. In 1909 Agua Caliente water was bottled
and marketed, both carbonated and natural, for table use.

Sargent Estate Warm Spring
South of Gilroy, Santa Clara County, CA
77°F / 25°C
Not hot enough to be interesting.
36.938, -121.565
http://www.santacruztrains.com/2015/11/sargent.html
West of the west frontage road of US-101.  James P. Sargent bought
Rancho Juristac in 1856 and renamed it Sargent's Ranch, which included
various enterprises including a vacation spot near Pajaro River.  The
ranch probaably was shuttered in 1956 when the last family member died.
Season: year-round
Cost: access is unclear
Distance: 57.2 miles, 56 mins

Spring in O'Neill Forebay
West of Los Banos, Merced County, CA
70°F / 21°C
Not hot enough to be interesting.
37.083, -121.042
Straight shot out CA-152 almost to I-5, then left on Santa Nella Blvd,
left again at the second left, go a bit over a mile, and it should be on
your left.
Season: year-round
Cost: access is unclear
Distance: 94 miles, 1 hr 35 min

Iridat Spring
West of Los Banos, Fresno County, CA
73°F / 23°C
Not hot enough to be interesting.
36.773, -120.898
About two miles NW of approximately 58399 Little Panoche Road.  No doubt
the same geothermal hotspot driving nearby Mercey Hot Springs.
Season: year-round
Cost: access is unclear
Distance: 127 miles, 2 hrs 4 mins

Unnamed spring
West of Firebaugh, Fresno County, CA
81°F / 27°C
Not hot enough to be interesting.
36.765, -120.901
About two miles NW of approximately 58399 Little Panoche Road.  No doubt
the same geothermal hotspot driving nearby Mercey Hot Springs.
Season: year-round
Cost: access is unclear
Distance: 127 miles, 2 hrs 4 mins

Nance's Hot Spring Resort
CLOSED BY FIRE, 2003.
1614 Lincoln Ave, Calistoga, Napa County, CA
38.581188, -122.577225
Season: n/a
Cost: n/a
Distance: 105 miles, 2 hrs: NE of S.F. Bay

Calistoga Hot Springs
1006 Washington Street, Calistoga, Napa County, CA
172°F / 78°C
38.578983, -122.577263
http://www.calistogaspa.com/
1915 note:  At Calistoga, near the head of Napa Valley, are several hot
springs at which during the seventies there was a large resort. The
hotel burned in the late seventies or early eighties, however, and since
that time the springs have not been of more than local importance. In
1910 the caretaker of the property had provided two bathhouses of two
tubs each, half a dozen small cottages on the place were rented, and a
few campers had pitched their tents near by. Hand pumps supplied hot
water directly to the tubs, and cool water was piped from a tank.  Four
main springs rise at the base of a knoll of buff-colored tuifa- ceous
material at the northern border of the meadow land, and a few pools and
seepages of hot water appear in the meadow itself. The observed
temperatures of the principal springs range from 126° to 173° and their
flows from about one-fourth gallon to 5 gallons a minute. The hottest
spring, which yields about 1 gallon a minute, appears to be the most
strongly mineralized, though its mineraliza- tion is only slightly
perceptible to the taste. Algse probably give it the slight flavor that
has caused it to be called a chicken-soup spring.  At Calistoga Hotel,
about 400 yards west from the springs, a dug well supplies warm water
for tub baths and a swimming plunge.  Warm water is also obtained in
several other wells near by and there is one strongly flowing artesian
well.
Season: year-round
Cost: $25 day pass (subj. to availability), 10am-9pm, or be a hotel guest
Distance: 106 miles, 2 hrs: NE of S.F. Bay

Dr. Wilkinson's Hot Springs Resort
1507 Lincoln Ave, Calistoga, Napa County, CA
38.580639, -122.577478
http://drwilkinson.com/
Motel.  Outdoor pool, bath houses, mud baths, physical therapy.
Season: year-round
Cost: bundled into resort/spa services
Distance: 105 miles, 2 hrs 1 min: NE of S.F. Bay

Indian Springs Resort and Spa
1712 Lincoln Avenue, Calistoga, Napa County, CA
38.581707, -122.575246
https://www.indianspringscalistoga.com/
http://www.thebolditalic.com/articles/7041-a-never-nude-s-guide-to-northern-california-hot-springs
Lodge, cottages, bunglows, standalone houses.  Mineral-water-fed pools, spa,
mud baths, Sam's Social Club restaurant.
Season: year-round
Cost: bundled into resort/spa services
Distance:

Roman Spa Hot Springs Resort
1300 Washington Street, Calistoga, Napa County, CA
38.579347, -122.580096
Season: year-round
http://romanspahotsprings.com/
Cost: bundled into resort/spa services
Distance: 123 miles, 2 hrs 11 min: NE of S.F. Bay

Mercey Hot Springs
62964 Little Panoche Rd., Firebaugh, Fresno County, CA
119°F / 48°C
36.704199, -120.859616
http://www.merceyhotsprings.com/
http://hotspringsdirectory.blogspot.com/2004/07/mercey-hot-springs.html
Lodging for campers, RVs, several cabins for rent.  Wood hot tub,
private tubs.  Indoor bath house with privte tubs.  Sauna.
1915 note:  Mercey Hot Springs rise near the extreme western edge of
Fresno County, among the barren hills that border San Joaquin Valley.
The main spring has been excavated to form a reservoir, is lined with
con crete, and is housed. It yields warm water of a
peculiar“soft’’taste.  The spring has been known since 1848, and was
first used to supply sheep-watering troughs. Water is scarce in this
region, and the Mercey spring is still valuable for stock watering, as
well as for its mineral character. There was formerly a small resort
here, and the bathing accommodations were in 190S still patronized by
people from the surrounding towns. For several years prior to the
earthquake of April 18, 1906, the water was bottled for table use, but
the market was interrupted at that time, and in 1908 had not been
resumed.  The main spring rises in an open draw at the base of low,
cherty gravel slopes. About 100 yards eastward, at the opposite side of
a low ridge, another small warm spring issues that is more strongly
sulphureted, and 400 yards westward, in a ravine, is a small cool spring
that is not noticeably mineralized.
Season: year-round
Cost: $25 for up to 4 consecutive hours, 9:00am to 8:00pm
Distance: 130 miles, 2 hrs 12 mins: I-5 south, then west into foothills

Unnamed Spring
Firebaugh, Fresno County, CA
75°F / 24°C
Not hot enough to be interesting.
36.640537, -120.683291
A few miles west of I-5 near Firebaugh.  Perhaps in Escarpado Canyon.
Season: year-round
Cost: access is unclear
Distance: 128 miles, 2 hrs 10 mins

Sykes Hot Springs
Ventana Wilderness
101°F
36.251515, -121.690154
Big Sur Station, 47555 California Route 1, Big Sur, Monterey County, CA
http://hotspringsdirectory.blogspot.com/2004/07/sykes-hot-springs.html
Season: year-round
Cost: free, $5 day parking permit and a challenging 10-mile hilly hike from Big Sur Station, 4+ hours each way
Distance: 123 miles, 2 hrs 13 mins (to the trailhead): drive to Big Sur coast

Harbin Hot Springs
CLOSED for cleanup and redesign/rebuild after total devastation by the September 2015 Valley Fire.  Targeted for partial 2016 reopening.
18424 Harbin Springs Rd, Middletown, Lake County, CA
120°F / 49°C
38.786402, -122.651712
http://www.harbin.org/
http://www.thebolditalic.com/articles/7041-a-never-nude-s-guide-to-northern-california-hot-springs
1915 note:  Harbin Springs (PI. VI, B) are in southern Lake County,
about 3 1/2 miles north of Middletown. Three springs, known as the
Arsenic, Iron, and Sulphur springs, rise close together in a ravine on
the western side of a branch, of Putah Creek, and yield water at
temperatures of 90°, 116°, and 120°, at a rate of 1, §, and 8£ gallons a
minute, respectively. The property has been a resort for many years and
the water of the Iron and Sulphur springs is used in tub and plunge
baths.  Buildings have been erected from time to time, so that in 1909
accommodations for about 200 people were provided by a hotel, a
three-story rooming house, 8 or 10 cottages, and a dozen tent houses. A
large building containing a gymnasium and dancing floor provides means
for entertainment.
Season: n/a
Cost: n/a
Distance: 125 miles, 2 hrs 33 mins

Sulphur Hot Spring
Sand City, Monterey County, CA
CLOSED (paved over)
100°F / 38°C
36.618, -121.845
I suspect this spring is lost to development.  The map says the
nearest address to NOAA's GPS coordinates is 828 Playa Avenue, in
a built-up commercial area, for what it's worth.
http://deepcreekhotsprings.net/dchs/forum/read.php?2,17100
Season: Year-round
Cost: n/a
Distance: 89 miles, 1 hr 27 mins

Unnamed Spring
Big Sur, San Benito County, CA
114°F / 46°C
36.331, -121.843
Map suggests that NOAA's GPS locations for this hot spring is on the
south fork of Little Sur River, about a mile east of Old Coast Road.
Season: Year-round
Cost: free
Distance: 122 miles, 2 hrs 25 mins (to nearest point on Old Coast Road)

Dolans Hot Spring
Near Lucia, Big Sur, San Benito County, CA
98°F / 37°C
36.087510, -121.586460
http://www.robinsonjeffersassociation.org/wp/wp-content/uploads/2010/09/RJN9899.pdf
The hot spring is on the bank of Big Creek, about a mile and a half from
the creek mouth, and under Mining Ridge (which is on the creek's north side).
1915 note:  A warm and mildly sulphurated spring exists on North Fork of
Big Creek, about 1.5 miles from the ocean and 7 miles by trail south of
Slates Hot Springs.  The water issues in a deep portion of the canyon
that is heavily timbered with redwoods, and, as the place is known only
locally and is not easily accessible, the spring has not been made use
of and has seldom been visited.
Season: year-round
Cost: free
Distance: 141 miles, 2 hrs 43 mins (to the trailhead)

Paraiso Hot Springs
38060 Paraiso Springs Road, Soledad, Monterey County, CA
CLOSED.
98°F / 37°C
105F
36.330602, -121.368010
In 2003, out-of-state real estate speculators Bill and John
Thompson ('Thompson Holdings') bought the Victorian resort and bulldozed
its twelve historic buildings without permit.  Now, they want to build a
luxury hotel, spa, vineyard, and 77 timeshare units.  For now, the site is
off limits.
1915 notes:  Paraiso Hot Springs are situated neart the head of a small
valley that opens eastward to Salinas Valley.  Underground water lies at
a shallow depth near the springs, beneath an area of several acres
within which at least five mineral springs rise.  The largest of these,
which is known as the Soda Spring, has an observed temp of 111 degrees F
and a discharge of perhaps 8 gal/min.  About 40 yards away, two small
sulphur springs rise with temps of 88 and 102 degrees F, and 100 yards
further east there are two drinking springs each of which yields perhaps
1/4 gal/min.  These are known as the Iron Spring and the Arsenic Spring,
and have temps respectively of 68 and 65 degrees F.
http://www.tripadvisor.com/ShowTopic-g33102-i6345-k767969-Paraiso_Hot_Springs-Soledad_California.html
http://www.montereycountyweekly.com/news/local_news/paraiso-hot-springs-developer-apologizes-for-demolishing-historic-buildings-county/article_3123764e-261d-11e3-85e5-0019bb30f31a.html
http://www.montereycountyweekly.com/news/local_news/a-decade-after-leveling-historic-buildings-developer-aims-to-rebuild/article_7df36508-f4a2-11e2-b2e0-001a4bcf6878.html
Season: year-round
Cost: n/a
Distance:

Vallejo White Sulphur Springs / Blue Rock Springs
Blue Rock Springs Park, Vallejo, Solano County, CA
68°F / 20°C
Not hot enough to be interesting.
38.125223, -122.188100
http://www.solanoarticles.com/history/index.php/weblog4/more/the_white_sulphur_spring/
http://www.dailyrepublic.com/news/solanocounty/local-springs-better-suited-to-relaxation-than-power/
http://www.winemerchant.com/historyproject/misc/naparesort.html
'There is a pond up there where I think the springs were.  It's just
cold water.'  The site is now a popular Vallejo city park.
Season: year-round
Cost: $5/car park entrance
Distance: 64.6 miles, 1 hr 9 mins

Tolenas Springs
Vacaville, Solano County, CA
68°F / 20°C
Not hot enough to be interesting.
38.311587, -122.054658
'The resort’s popularity dwindled over time. According to a Solano
County General Plan history report, the last of the buildings burned
sometime around 1924. Today, the springs remain on private property and
cannot be reached by the general public.'
Season: year-round
Cost: no public access
Distance: 83.5 miles, 1 hr 34 mins

St. Helena White Sulphur Spring
White Sulphur Springs Inn and Spa, 3100 White Sulphur Springs Road, St. Helena, Napa Valley, CA
97°F / 36°C
38.490743, -122.498362
http://napavalleyregister.com/star/news/local/white-sulphur-springs-now-just-a-retreat-center/article_3bc3ebdb-d365-5606-b79c-67a6bddc8125.html
Private retreat operated by Hoffman Institute.  The spring feeds a
natural sulphur soaking pool.  There is also a whirlpool spa and swimming
pool.
Season: year-round
Cost: no public access
Distance:

Napa Soda Springs / Napa Rock Soda Spring / Phillips Soda Spring / Priest Soda Springs
Napa County, CA
78°F / 26°C
Not hot enough to be interesting.
38.518783, -122.260774
http://www.winemerchant.com/historyproject/sodasprings/sodasprings.html
http://www.laurencoodley.com/sodasprings.html
Site of one of the greatest of historic resorts in California.
Season: year-round
Cost: no public access
Distance: 100 miles, 1 hr 56 mins

Vichy Hot Springs Resort
2605 Vichy Springs Rd, Ukiah, Mendocino County, CA
85°F / 29°C
39.166530, -123.157216
150-year-old resort (26 rooms) + cottages, carbonated 'Vichy' mineral baths, Olympic-sized pool (May-Oct), hot pool, Chemisal Falls natural pool, 700 acres of walking trails.  Not to be confused with the now-vanished Napa Vichy Springs
in Napa County.
http://www.vichysprings.com/
http://www.thebolditalic.com/articles/7041-a-never-nude-s-guide-to-northern-california-hot-springs
Season: year-round
Cost: $30 for 2 hours, $55 for day pass, 9am-dusk, or stay at the resort
Distance: 148 miles, 2 hrs 35 mins

Slates Hot Springs, aka Esalen Institute Hot Springs
55000 California Route 1, Big Sur, Monterey County, CA
122°F / 50°C
36.1238333, -121.63718699999998
http://www.esalen.org/
http://www.thebolditalic.com/articles/7041-a-never-nude-s-guide-to-northern-california-hot-springs
1915 note:  Slates Hot Springs is on Mr. J.A. Little's ranch.  The water
here issues at ten principal points in a distance of 125 yards, halfway
up the face of bluffs that here border the ocean.  A small private
bathhouse has been built near the easternmost spring.  The waters range
in temp from 110 to 121 degrees F.  About 1/4 mile northwest of the main
group, on the left bank of Hot Creek, is another spring, 98 degrees F.
This spring yields perhaps 5 gal/min, and is used for laundering
clothes.
Season: year-round
Cost: $20/person between 1-3am, reservation req'd, or stay / attend a conference
Distance: 137 miles, 2 hrs 41 mins

Franklin Hot Springs
3015 Creston Road, Paso Robles, San Luis Obispo County, CA
35.587807, -120.641750
Seems minimally developed.  There's pond fishing, boating.
http://franklinhotsprings.com/
Season: year-round
Cost: $7 day pass 8am-10pm
Distance: 182 miles, 2 hrs 52 mins

Wilbur Hot Springs Resort / Simmons Hot Springs
3375 Wilbur Springs Rd., Wilbur Springs, Colusa County, CA
153°F / 67°C
39.039749, -122.422076
22 miles east of Clear Lake, about 20 miles west of Williams.  Victorian
hotel rooms, cabins, lodge rooms, bunk room, camping.  (No RV
facilities.)  Communal kitchen.  Solar powered electricity, gas
fireplaces.  Grocery store and restaurant.  Two massage rooms.   One
regular cold pool, and an open-sided big wooden shelter with three pools
of differing temperatures.  One outdoor hot pool.  Sauna.  Site is next
to a creek/river.  1915 note:  In the valley of Sulphur Creek, in
southwestern Colusa County —- a region where considerable mining for
quicksilver has been carried on —- are several groups of springs that
yield hot sulphureted water.  The lowest, easternmost group is at Wilbur
Hot Springs, whicn has been a resort for more than 40 years. It was
originally known as Simmons Hot Springs, and the resort to which the
name Wilbur Hot Springs was applied was 4 miles to the northwest, near
the Elgin quicksilver mine; a number of years ago, however, after the
hotel at the latter place burned, the Simmons property was purchased by
the owners of Wilbur Hot Springs and the upper place was abandoned.  In
1908 the present Wilbur Hot Springs (PI. IV, D, p. 32) again changed
ownership, and most of the buildings, which were in poor condition, were
removed and new cottages built.
The hot springs issue along the borders of Sulphur Creek, for a distance
of about one-half mile on the Wilbur property, but are mainly in a
barren, saline area that borders the west side of the creek from 75 to
200 yards west of the hotel. The position and approximate extent of this
area are shown at the left in Plate IV, D. The principal springs have
been numbered by the owners, beginning at the western border of the
property, on the assumption that eventually there will be 30 developed
springs, though only 12 have been of importance. Several of the group
yield cold water.
Spring No. 1, a hot sulphur spring, issues mainly in a pool a few feet
west of the Wilbur property, on land that belongs to the Manzanita
Mining Co., but warm water also seeps out several yards east of the main
pool. This pool has been used occasionally as a foot bath, but in 1910
the adjacent seepages had not been developed.
The Hot Black Sulphur Spring (No. 10) is a few hundred yards east of No.
1 and about 500 yards west of the Wilbur Hotel. Its water issues at the
southeast edge of the creek, and when visited formed a pool that was
covered by a tent and used as a foot bath.
The Main Springs (No. 22) are about 200 yards west of the hotel, at the
upper edge of the barren area along the creek. Two concrete basins or
small reservoirs, a few feet apart, are built around the springs, which
yield a flow of hot, strongly sulphureted, and salty water at a measured
rate of 30,000 gallons a day (21 gallons a minute).  The water is clear
and its color is distinctly yellow, like that of the water from Lower
Blue Lick Springs, Ky., whose color has been assigned by Palmer 1 to
alkaline sulphides in solution. The more strongly mineralized waters of
the Wilbur springs probably contain alkaline sulphides in solution in
medicinal amounts, but this character was not shown in the form in which
the analyses were reported. The water is piped to cooling tanks and
thence to tubs in an adjacent bathhouse, opposite the hotel. A thin
crust of white, apparently amorphous sulphur rapidly collects on the
surface of the water in the cooling tanks. On being disturbed it settles
as a sludge, of which a considerable quantity has been used as a salve.
A few feet north of the Main Springs is a smaller one, over which a
men’s mud-bath house has been built. A continual flow of water in the
mud bath is thus directly obtained. A women’s mud-bath house has been
constructed in the same way, over another spring 30 or 40 yards
eastward. Near the northeast corner of the men’s mudbath house there is
a shallow pool, about 4 feet in diameter, called the Chromatic Spring,
for material that changes color from day to day and is probably of
algous (vegetable) nature usually coats its bottom. On one morning it
was bright green in the central part of the bottom and reddish purple
over the marginal third. On the following morning the coating had a
uniform dark-olive tint.
The water is said to be sometimes as black as ink and to contain a black
substance (probably iron sulphide) that gradually settles. At other
times the pool is clear and contains no noticeable growth. In connection
with the water of this spring, a red water may be mentioned, that during
hot dry weather collects in a few small depressions in the rock surface
of the barren area. It is usually crusted with salts and is a saturated
solution. On evaporation it forms crystals that have been examined
microscopically by It. C. Wells and are considered to be probably
potassium sulphate and sodium chloride, the former predominating. The
red coloring matter easily passes through filter paper and is rendered
only slightly less .distinct by boiling. It may be a minute vegetable
organism, but a bottled sample of the water retained its color after
standing four years.
The Catarrh and Complexion Spring (No. 20) issues on the south side of
the creek, about 120 yards east of the Main Springs. Like the other
springs its water is sulphureted and strongly salty, its chemical
character being shown by the analysis on page 102. It has been used as a
tonic drinking water, as a douche, and as a shampoo, being considered to
be efficacious in removing dandruff.
Three small springs are in basins a few feet apart in a spring house
southeastward, across the creek from the hotel. The western one (No.
24), which is called the Cold Magnesia Spring, is the pleasantest for
drinking and is the one most patronized. The central one (No.  26),
which is also a magnesia spring, tastes more noticeably of magnesia. No.
28 is a cold sulphur spring. The Cold Black Sulphur Spring (No. 30) is
on the south side of the creek, beyond the stable and about 125 yards
east of the hotel. It has been protected by a board curbing and cover
and yields a moderately sulphureted but palatable water. Jackson Sulphur
Spring seeps from the road bank across the creek from No. 30. Its water
tastes sulphureted and magnesic, and has been used slightly for
drinking, but it is locally believed that its use tends to produce
headache. Eastward, downstream from the Jackson Spring, there are
several other cool, sulphureted seepages, but in 1910 these had not been
developed.
http://www.wilburhotsprings.com/
http://www.thebolditalic.com/articles/7041-a-never-nude-s-guide-to-northern-california-hot-springs
http://hotspringsdirectory.blogspot.com/2004/07/wilbur-hot-springs.html
Season: year-round
Cost: $57 day pass 10am-5pm, or stay there
Distance: 154 miles, 2 hrs 56 mins

Orr Hot Springs Resort
13201 Orr Springs Rd, Ukiah, Mendocino County, CA
104°F / 40°C
39.229557, -123.366696
14 miles up a mountain road from Ukiah
Communal kitchen, lodge, library, yurts, cabins, tent camping area, dry sauna, steam room, various hot and cold pools, private tubs.
1915 note:  Orrs Hot Springs (PI. IV, B, p. 32) issue along the eastern
edge of the main fork of Big River, which here flows in a deep, wide
canyon.  The locality is a resort and stage station on the road between
Uldah and Mendocino. A hotel and two or three cottages furnish
accommodations for about 50 guests, and tents are erected during the
summer when needed. Five springs rise near the hotel. They range in
temperature from about 70° to 104° and have individual flows of 4 or 5
gallons a minute. One of the springs rises in a small swimming plunge,
and the others supply tub and plunge baths. Near one side of the plunge
is also a drinking spring, 85° in temperature and of seeping flow, and
at the edge of the stream, 250 yards below the main group, another
spring that is used for drinking issues with an observed temperature of
63° and a flow of about 2 gallons a minute.  A hydrocarbon gas that was
formerly used for lighting issues at the main springs, but the
earthquake of April 18, 1906, apparently so altered the points of escape
of the gas that in 1909 it was no longer used.
http://www.orrhotsprings.org/
http://www.thebolditalic.com/articles/7041-a-never-nude-s-guide-to-northern-california-hot-springs
http://hotspringsdirectory.blogspot.com/search/label/Orr%20Hot%20Springs
Season: year-round
Cost: $30 day pass 10am-10pm (capacity permitting), or stay there, call
ahead for either of these.
Distance: 158 miles, 2 hrs 56 min

Tassajara Zen Mountain Center and Hot Springs
Buddhist monastery operated by SF Zen Center
47791 Tassajara Road, Carmel Valley, Monterey County, CA
36.233937, -121.549038
Vegetarian lunch ($15) is by reservation only.
http://www.sfzc.org/tassajara/guest-season
http://www.thebolditalic.com/articles/7041-a-never-nude-s-guide-to-northern-california-hot-springs
http://hotspringsdirectory.blogspot.com/2004/07/tassajara-buddhist-meditation-center.html
This is primarily a retreat for Zen Buddhist meditation and study, but
accepts both day and overnight guests by arrangement.  (Assume a
reservation in advance is required for anything.)  Lodiging in yurts,
cabins, stone rooms.  Bathhouse is Japanese-style and has separate sides
for men and women, but co-ed bathing is permitted in the evenings. Each
side includes a tiled indoor hot plunge, an outdoor plunge, large decks
appropriate for sunning and yoga, a steam room, showers and a small
private bath with hot springs and cold water spigots. There are also
steps leading down to the creek.  The approach road is steep and
recommended for manual transmission only.  The last 45 minutes of road
is gravel, and it's recommended to take the shuttle bus (by reservation)
instead of driving it.
1915 notes:  A large amount of hot water issues at Tassajara Hot
Springs, which are in the canyon of Arroyo Seco, in the southern part of
Monterey County.  About 17 thermal springs may be counted here, in the
bed of the creek and along its southern bank.  They range in temp from
about 100 to 140 degrees F and from mere seepages to flows of 7 or 8
gal/min.  The thermal waters issue from a gneiss that is exposed along
the creek for a distance of 200 yards or more.
Season: summer (May - Sep)
Cost: $30 day pass 9am-9pm, reservation required, call less than 2 weeks before
Distance: 127 miles, 3 hrs 12 min: S to Salinas, CA-68 to Laureles Grade to Carmel Valley Road to Tassajara Road

Sycamore Mineral Springs Resort and Spa
1215 Avila Beach Drive, San Luis Obispo, San Luis Obispo County, CA
35.185752, -120.712835
Resort rooms have their own outdoor mineral hot tubs.  Hillside hot tubs by reservation.  Oasis Waterfall Lagoon rentable by the hour for groups.
https://www.sycamoresprings.com/
http://hotspringsdirectory.blogspot.com/2004/05/sycamore-mineral-springs.html
Season: year-round
Cost: $14.50/hr Mo-Th, $18.50/hr FrSaSu, or stay there
Distance: 214 miles, 3 hrs 16 min

Avila Hot Springs
250 Avila Beach Drive, Avila Beach, San Luis Obispo County, CA
35.180552, -120.703243
Cabin rentals, tent camping, RV camping.  20' x 20' therapeutic hot mineral soaking pool, and heated swimming pool.
http://avilahotsprings.com/
Season: year-round
Cost: $10 day pass 8am-9pm SuMoTuTh, 9am-10pm WeFrSa, or stay there.
Distance: 214 miles, 3 hrs 16 min

Sierra Hot Springs Resort & Retreat Center / Campbell Hot Springs
521 Campbell Hot Springs Road, Sierraville, Sierra County, CA
39.573990, -120.348964
111°F / 44°C
30 miles (30 mins) north of Truckee
Non-profit retreat and workshop center in the foothills.  Lodge, hotel, and camping sites.
1915 note:  At the extreme southern border of Sierra Valley, about 2
miles by road southeast of Sierraville, eight thermal springs are
scattered for a distance of a mile along the low slopes that border this
end of the valley and in the adjacent meadowland. The property has been
improved as a resort since the early eighties, and in 1909 a three-story
hotel and an annex provided accommodations for 100 guests.  One of the
largest hot springs rises on the hillside, 50 feet above the valley. It
discharges about 15 gallons a minute of slightly sulphureted water 102°
in temperature. The water has been piped to tubs and to a plunge, and
has also been used for garden irrigation. Water from another spring that
rises at the edge of the meadow, 800 yards to the southeast, has been
used to supply a wooden swimming plunge near by. The observed
temperature of this spring was 98° and its flow was about 30 gallons a
minute. Its water is more noticeably sulphureted than that of the
first-mentioned spring, and it also has a corrosive effect on the boards
that curb it.
A cool spring beside the hotel and another at camp grounds to the
southeast have been used for drinking. The other springs have been
slightly used for irrigating vegetable patches. The water of one of
them, called the Hobo Spring, issues with a temperature of 1110,
which is the highest that was observed in this group. An old bathhouse
at the westernmost spring was apparently little used.
http://sierrahotsprings.org/
Season: year-round
Cost: $20 day pass, $15/3 hrs Mo-Th, $20/3 hrs FrSaSu & holidays.  Plus
one member of the party must have a membership.  1 month membership is $5.
Distance: 244 miles, 4 hrs 6 mins

Grover Hot Springs State Park
3415 Hot Springs Road, Markleeville, Alpine County, CA
38.696736, -119.839909
80F and 104F
Note that Markleeville is the centre, lowest point, and county seat of
aptly named Alpine County.  Any approach requires traversing a high
Sierra mountain pass.  Alpine County is south of the Lake Tahoe basin.
1915 note:  In Alpine County, about 4 miles west of Markleeville and
near the southern extension of the Sierra Valley fault, considerable
heated .water rises at Grovers Hot Springs from a dozen springs and
seepages in two marshy areas about 100 yards apart, at the edge of a
meadow on the southern side of Markleeville Creek. The principal springs
range in temperature from 128° to 146° and their combined discharge —-
perhaps 100 gallons a minute —- irrigates the meadow.  In 1909 a pool 3
or 4 feet deep and about 30 feet square was used for bathing, and the
place has been visited as a camping resort for many years.
Season: year-round
Cost: free with park entrance, natural springs.  Swimming pool nearby is $7.
Distance: 240 miles, 4 hrs 8 mins

Mono Hot Springs Resort / Mono Hot Springs / Lower Hot Springs / Lower Mineral Hot Springs
70000 Edison Lake Road, Lakeshore, Fresno County, CA
37.3266098, -119.0176179
Central California, south fork of the San Joaquin River.  Note:  This is on the west side of the Sierra Nevada, CA-168, 85 miles (2.5 hours) east of Fresno via Kaiser Road Pass.  Follow signs to Shaver and Huntington Lakes.
Cabins, tent cabins, camping cabins, spa.  Massage by appointment.
1915 note:  About 10 miles below Blaney Meadow Springs, on the south
side of the stream, another group of hot springs and seepages forms a
considerable area of moist land on the slopes above the river.  The four
larger sprigns are used as bathing pools by campers during summer
months.
http://www.monohotsprings.com/
http://hotspringsdirectory.blogspot.com/2004/06/mono-hot-springs.html
Season:  summer (May 15 - Nov. 1)
Cost: $20 day pass
Distance: 240 miles, 4 hrs 47 mins

Stewart Mineral Hot Springs Retreat
4617 Stewart Springs Road, Weed, Siskiyou County, CA
41.419720, -122.504178
5 tepees, 4 motel rooms (closes in winter), 6 apartment style units, 4 cabins with.  kitchenettes, “Wellness” Room” and a large A-frame house (for up to 10 people).  Camping and RV spots are also available.  Bathhouse with 13 private baths, adjacent sauna.  Cold mineral springs are piped from the source and heated, for soaking tubs. Bathhouse has 15 individual bathing rooms with old-fashioned tubs and music. Large wood-heated sauna. The bathhouse is surrounded by wide wooden decks overlooking Parks Creek, nice for sunbathing and relaxing.
http://stewartmineralsprings.com/
http://hotspringsdirectory.blogspot.com/2008/03/stewart-mineral-springs.html
Season: year-round (except certain holidays)
Cost: $30 day pass ($18 for sauna)
Distance: 326 miles, 5 hrs 9 mins

Drakesbad Guest Ranch in Mt. Lassen National Park / Drake Hot Springs
12856 Warner Valley Road, Chester, Plumas County, CA
40.442657, -121.382724
151°F / 66°C
Guest ranch operated by park concessionaire California Guest Services.
Upscale but rustic all-inclusive lodging.   Seasonal, open only early
June to early Oct.  Very popular and often booked as far as 2 years in
advance. Drakesbad consists of a historic lodge, dining hall, cabins, hot
spring fed pool, recreational lake, and trail system nestled in a
beautiful meadow in Warner Valley with views of Mt. Harkness and
Flatiron Ridge.
1915 note:  Drake Hot Springs issue along the side of Hot Springs Valley
about 1 1/2 miles east of Devils Kitchen. For many years the property
has been a camping resort and within recent years accommodations for
guests have been provided during the summer months.
The springs are scattered for a distance of 100 yards or more,
mainly along the slope on the south side of Warner Creek, but one
of the principal springs, which yields about 3 gallons a minute of
water 128° in temperature, issues from a seam in rock at the south
edge of the creek. In 1910 a small bathhouse and a wooden tank
that was used as a plunge bath were supplied with hot water from
three springs 40 or 50 yards south of the creek. These springs yield
a total of perhaps 15 gallons a minute at temperatures of 123°, 146°,
and 148°.
http://drakesbad.com/
Season: summer (June - Oct)
Cost: Included with stay at the resort, $147/day and up, all-inclusive
Distance: 308 miles, 5 hrs 10 mins

Hot Springs Valley
83°F / 28°C
N 40.44 W 121.42
Hot Springs Creek, 1 mile west of Drakesbad

Travertine Hot Spring
Three pools on a hilltop, a mile south of Bridgeport, Inyo County, CA.
38.245760, -119.205690
http://www.yelp.com/biz/travertine-hot-spring-bridgeport
http://www.hotspringsoak.com/travertine-hot-springs.html
http://hotspringsdirectory.blogspot.com/2004/06/travertine-hot-springs.html
Note that Molly’s Pool is a fourth tub, a two-person tub a ways dawn
from the other two.  From the lower pools, face downhill towards the
valley. On your left, several hundred feet away, is a ridge comprised of
travertine rock. Head towards that ridge, and find a decent place to
climb up on top of it. On the other side, you'll see a small valley with
a dirt road, and one telephone pole.  Head towards the telephone pole,
and you might run into it, after walking a several hundred feet to maybe
1000 feet (depending on where you crossed the ridge).  If you get to the
pole, look back up hill, and you should see it.
Season: year-round
Cost: free
Distance: 306 miles, 5 hrs 16 mins

Beverly Hot Springs Spa
308 N Oxford Avenue, Los Angeles, Los Angeles County, CA
105 degrees F
34.076606, -118.307723
Full service day spa, open 9am-9pm.
http://beverlyhotsprings.com/
Luxury. Separate men's and women's facilities.  Outdoor pools/tubs and
indoor hot and cold, sauna pools/tubs.  Shitsu massage, health and beauty
treatments.
Season: year-round
Cost: $30 day pass M-Th, $40 FrSaSu & holidays, no in/out, covers sauna and steam rooms in addition to the hot and cold pools.  Luxury. Separate men's and women's facilities.
Distance: 357 miles, 5 hrs 51 mins

Hilltop / Hill Top / Pulkey's Pool Hot Spring
37.662077, -118.789296
Off Whitmore Tubs Road, Mammoth Lakes, Mono County, CA
A beautiful stone and concrete pool with extremely hot water that is
piped with an adjustable valve in the Hot Creek Geothermal Area.
Take US-395 south to Benton Crossing Road (Green Church). Turn left,
and go about 2.5 miles, past two cattle guard crossings. Just
past the second cattle guard, you will go down a moderate hill. At the
bottom of the hill, turn left onto a dirt road and follow it, staying to
the right, for about 300 yards to a well-marked dirt parking area. The
tub is just about 100 feet on top of the small hill in front of you.
Alternate directions: Located in Long Valley by Mammoth Lakes; near the
also-popular Hilltop Hot Springs. Turn east from Route 395 onto Benton
Crossing Road (there is a little green church on the corner). Travel
east ~2.5 miles to reach two cattle guards.  Cross both, and keep going
straight down the hill past the cattle guards marking the road to Wild
Willy's Hot Spring. Turn left onto the dirt road. The road gets quite
near the spring at times, but the ground you must cross can be muddy so
look for any good spot to reach the white, flat mineral deposit marking
the location of the spring.
http://www.hotwaterslaughter.com/hotspring/shepherd-hot-spring
http://hotspringsdirectory.blogspot.com/2004/06/hilltop-hot-spring.html
http://studentreader.com/long-valley-caldera/
http://www.totalescape.com/outside/campsites/mammoth-hot-springs/
Season: year-round
Cost: free
Distance: 362 miles, 6 hrs 12 mins

Wild Willie's Spring / Wild Willy's Spring / Crowley Hot Springs / Crowly
Off Whitmore Tubs Road nr. Benton Crossing Road, Mammoth Lakes, Inyo County, CA
127 degrees F
Located in Long Valley by Mammoth Lakes; near the also-popular Hilltop
Hot Springs. Turn east from Route 395 onto Benton Crossing Road (there
is a little green church on the corner). Travel east ~2.5 miles to reach
two cattle guards. To reach the hot springs, turn right just past the
second cattle guard (you would keep going to reach Hilltop Hot Springs),
then keep left whenever there are forks. After about a mile is a parking
area with a sign and a wooden boardwalk leading to the concrete tubs.
http://studentreader.com/long-valley-caldera/
http://www.totalescape.com/outside/campsites/

Hot Creek Geological Site / Hot Creek Springs / Hot Creek Gorge
Hot Creek Hatchery Road
CLOSED TO SOAKING
37.660353, -118.828091
Mammoth Lakes, Mono County, CA
http://volcanoes.usgs.gov/volcanoes/long_valley/long_valley_geo_hist_66.html
U.S. Forest Service-managed site with hot springs and geysers, and pools
of bright blue, deadly boiling water.  Dangerous and fenced off since 2006,
and yet still kills people who ignore the warning signs.
Season: year-round.
Cost: your life
Distance: 362 miles, 6 hrs 12 mins

Crab Cooker Hot Springs / Ken's Tub / Fleur de Lys
Off Whitmore Tubs Road, Mammoth Lakes, Mono County, CA
37.662383, -118.800711
http://www.hotwaterslaughter.com/hotspring/crab-cooker
http://www.owensvalleyhistory.com/casa_diablo/page75.html
http://soakersbible.tribe.net/photos/8ee9b0d9-8a95-4872-8cd4-9df8b2335f35
Starting at the I-395 east turn onto Benton Crossing Road at the Green
Church, pass Animal Control on the left, a swimming pool (Whitmore Pool)
on the right, then take the next left on a dirt road.  Drive 1.7 miles.
As the road curves left, take a right on the dirt road heading south.
Drive just under 1/2 mile, take a left onto another dirt road, which
will wind north through a small canyon, then veer east at parking.
An extremely hot bathtub cement sized pool in a boggy meadow in the Hot Creek
Geothermal Area.  Caution:  Source water at the valve is 120 degrees F,
thus potentially dangerous.  Fill tub, then let it cool.  Beautiful
view of the Hot Creek area.
Season: year-rond
Cost: free
Distance: 362 miles, 6 hrs 12 mins

Shepard's Hot Springs (sometimes rendered as Shepherd Hot Spring)
Off Whitmore Tubs Road, Mammoth Lakes, Mono County, CA
37.666561, -118.802943
http://www.totalescape.com/outside/campsites/mammoth-hot-springs/
Starting at the I-395 east turn onto Benton Crossing Road at the Green
Church, pass Animal Control on the left, a swimming pool (Whitmore Pool)
on the right, then take the next left on a dirt road.  Drive 2 miles,
then take a turn to the right.  At about 1/2 mile, road will end at the
hot spring.
Masonry pool fed by a spring 50' uphill, delivered by a pipe.

Whitmore Tub / Whitmore Hot Spring / Whitmore Springs
904 Benton Crossing Road, Mammoth Lakes, Mono County, CA
37.629048, -118.810325
167 degrees F
http://www.totalescape.com/outside/campsites/
Starting at the I-395 east turn onto Benton Crossing Road at the Green
Church, pass Animal Control on the left, a swimming pool (Whitmore Pool)
on the right.  Right behind Whitmore Pool (accessible for a small fee on
private land) is Whitmore Tub.
1915 note:  In Long Yalley, 3 miles west of Owens River and about 7 miles
south of east of Casa Diablo Springs, there are two oblong pools
a few feet apart and 40 feet long in which warm water rises and from
which it flows to a shallow pond called Whitmore Tub. A maximum
temperature of 100° was recorded in the pools, and the discharge
measured was about 450 gallons a minute.  Much dark-green algous
growth lines the pools and the discharge channels, and small snails
live in the water.
The springs rise in a flat, salt-grass area about 100 yards south of
the base of lava hills and 15 or 20 yards west of a 6-foot terrace-like
bank that drops eastward toward the river. At two places
along the edge of this bank springs that have about equal flows of 8
gallons a minute issue with temperatures of 74° and 100°.  Other similar
springs rise about 3 miles farther north in the valley and form a
small meadow.
Season: year-round
Cost: free
Distance: 364 miles, 6 hrs 13 min

Hot Tub Hot Springs / The Tub
Off Whitmore Tubs Road, Mammoth Lakes, Mono County, CA
37.657544, -118.799451
http://www.totalescape.com/outside/campsites/
Starting at the I-395 east turn onto Benton Crossing Road at the Green
Church, pass Animal Control on the left, a swimming pool (Whitmore Pool)
on the right, then take the next left on a dirt road.  Drive just over 1
mile, and turn right.  The spring is 0.1 mile ahead on the left.
Cement pool with a pipe directing warm water into it.  Camping is
permitted.
Season: year-round
Cost: free
Distance: 364 miles, 6 hrs 13 min

Fales Hot Springs
Northwest of Bridgeport, Mono County, CA
38.348000, -119.400002
CLOSED
http://hottubbers.org/usa/california/fales-hot-springs/
https://www.trails.com/tcatalog_trail.aspx?trailid=HGS271-057
http://hotwaterslaughter.com/hotspring/fales-hot-ditch
http://www.mobileranger.com/blog/soaking-in-the-past-at-four-of-californias-hot-springs/
Fales is a hot ditch running just west of US-395, north of Bridgeport,
on private property, and lately signposted as no trespassing.
1915 note:  Fales Hot Springs are about 13 miles northwest of
Bridgeport, on the main road to Minden, Nev. In 1908 there was a stage
station and road house at the place, and plunge and tub baths were
provided for use of the water. The place was too inaccessible to have
become much of a resort, but during the summer months it was visited by
campers.  The hot water rises along the bed of a small creek that has
been dammed to form a bathing pool and to keep the water at a
comfortable temperature, for in the main group the temperature ranges
from 129° to 141°. Measurements indicated that the total discharge was
about 300 gallons a minute. Much gas, probably carbon dioxide, rises
with the water, which is too hard for use in laundry work.
Season: n/a
Cost: n/a
Distance: 293 miles, 5 hrs 9 mins

Glen Ivy Hot Springs Spa / Temescal Hot Springs
25000 Glen Ivy Road, Corona, Riverside County, CA
33.756763, -117.493720
Mud baths, hot mineral springs, spa w/treatements.  12 acres of gardens.
8 miles south of Corona, on Glen Ivy Road off Temescal Canyon Road.
Two snack bars serving sandwiches, drinks including wine and beer.
Massage, mud baths, theraputic body treatments, and full service salon.
1915 notes:  Principal spring is 102 degrees F and flows bout 15
gal/min, issues at the mouth of a ravine.  Several other warm springs
issue at points for half a mile northward, but on
http://www.glenivy.com/
Season: year-round
Cost:  $39 day pass M-Th, $52 FrSaSu
Distance: 416 miles, 6 hrs 35 mins

Keough's Hot Springs
898 Keough Hot Springs Road, Bishop, Owens Valley, Inyo County, CA
37.253673, -118.373228
"Modular retreat" (mobile home), tent cabins, tents, RV parking.  100' x 40' large pool, 15' x 40' hot pool, both using fresh mineral water.
http://keoughshotsprings.com/
Season: year-round
Cost: $10 day pass
Distance: 397 miles, 6 hrs 45 mins

Keough Hot Ditch
Bishop, Owens Valley, Inyo County, CA
37.324550, -118.384113
92 degrees F
https://www.ocf.berkeley.edu/~fricke/hotspring/
About half a mile down the road from Keough's Hot Springs, alongside a
1/4 mile stretch of US-395.  There are several pools.  Better in the
evenings when there is more flow from Keough's Hot Springs, upstream.
http://hotspringsdirectory.blogspot.com/2004/06/keough-hot-springs-ditch.html
Season: year-round
Cost: free
Distance: 397 miles, 6 hrs 45 mins

Benton Hot Springs
Benton Hot Springs, Mono County, CA
37.802157, -118.529788
Near the intersection of CA-120 and CA-6, on CA-120
http://historicbentonhotsprings.com/
Season: year-round
Cost:  $10/hr from 11am-4pm, reservations req'd
Distance: 397 miles, 6 hrs 58 mins

Aqua Soleil Hotel and Mineral Water Spa
14500 Palm Drive, Desert Hot Springs, Riverside County, CA
33.942602, -116.500624
Natural mineral hot springs feed the outdoor swimming pool, along with the both jetted pools.  Spa.
http://www.aquasoleilhotel.com/
Season: year-round
Cost: $15 day pass weekdays, no day use on weekends
Distance: 468 miles, 7 hrs 14 mins

Miracle Springs Resort and Spa
10625 Palm Drive, Desert Hot Springs, Riverside County, CA
33.971692, -116.501865
Hotel has 110 rooms.  Eight mineral pools.
http://miraclesprings.com/
Season: year-round
Cost: Can't tell.  Might require appointment at the 'Spa in Palm Springs'.
Distance: 469 miles, 7 hrs 17 mins

Desert Hot Springs Spa and Hotel
10805 Palm Drive, Desert Hot Springs, Riverside County, CA
33.969877, -116.502038
140 degrees F
Hotel w/50 rooms.  Mineral spring whirlpools and soaking pools for guests.  Spa services available.  Seven soaking and Champagne pools,  3 outdoor swimming pools, one Olympic size pool.  5 spa tubs, natural hot springs.
http://www.dhsspa.com/
Season: year-round
Cost: day pass available, cost unclear
Distance: 469 miles, 7 hrs 17 mins

El Morocco Inn and Spa Hot Springs
66810 4th Street, Desert Hot Springs, Riverside County, CA
33.965472, -116.495922
Hotel rooms, natural mineral hot spring and spa.
http://www.elmoroccoinn.com/
Season: year-round
Cost: $50 day pass
Distance: 469 miles, 7 hrs 17 mins

Two Bunch Palms Resort and Spa
67425 2 Bunch Palms Trail, Desert Hot Springs, Riverside County, CA
33.947885, -116.487327
Hotel has 70 rooms.  Two mineral pool areas at different temperatures, and a swimming pool.
http://www.twobunchpalms.com/
http://hotspringsdirectory.blogspot.com/2004/05/two-bunch-palms.html
Season: year-round
Cost: $25 day pass weekdays, $40 weekends
Distance: 469 miles, 7 hrs 17 mins

Living Waters Spa
13340 Mountain View Road, Desert Hot Springs, Riverside County, CA
33.951690, -116.475033
Hotels rooms.  Spa.
http://www.livingwatersspa.com/
Season: year-round
Cost: $45.00 day pass for 1 or 2 people, 10am - 5pm
Distance: 470 miles, 7 hrs 18 mins

The Spring Resort and Day Spa
12699 Reposo Way, Desert Hot Springs, Riverside County, CA
33.955726, -116.482610
12 guest rooms, three mineral pools.
http://the-spring.com/
Season: year-round
Cost: looks like hot spring access is tied to spa appointments
Distance: 470 miles, 7 hrs 20 mins

Sam's Family Spa Hot Water Resort
70875 Dillon Road, Desert Hot Springs, Riverside County, CA
33.923020, -116.425470
Motel, RV, tents, mobile home rentals.  Four therapeutic hot spring pools, a large swimming pool and a wading/sitting pool. Dry sauna.
http://samsfamilyspa.com/
http://hotspringsdirectory.blogspot.com/2004/05/sams-family-spa.html
Season: year-round
Cost: $14 day pass Mo-Fr, $20 SaSu & holidays
Distance: 471 miles, 7 hrs 20 mins

Shoshone Hot Spring
Next to Shoshone RV Park, 22 CA-178, Shoshone, Inyo County, CA
35.980137, -116.273524
Death Valley RV part / camp site with a hot spring feeding a swimming
style pool
Shoshone Inn nearby.
Season: year-round
Cost: no day use of the pool, but free if you stay at the inn or RV park
Distance: 511 miles, 7 hrs 51 mins

Delight's Hot Springs Resort
368 Tecopa Hot Springs Road branching onto Elias Way, Tecopa, Inyo County, CA (Mohave Desert / Death Valley)
35.875539, -116.227043
Cabins and motel rooms, RV park.  4 individual private hot spring pools with showers.
http://www.delightshotspringsresort.com/
Season: year-round
Cost: $10-$15 day pass
Distance: 509 miles, 7 hrs 51 mins

Tecopa Hot Springs Resort
105 Tecopa Hot Springs Road, Tecopa, Inyo County, CA (Mohave Desert / Death Valley)
35.889885, -116.245315
Cabins, motel rooms, tent camping, RVs.  Soaking tubs in the motel, two private tubs in the bath house, motel has three other tubs.
http://www.tecopahotsprings.org/
Season: year-round
Cost: $8 day pass (when available)
Distance: 509 miles, 7 hrs 51 mins

Tecopa Hot Springs / Tecopa County Hot Springs / Tecopa Hot Springs
Campground and Pools
860 Tecopa Hot Springs Road, Tecopa, Inyo County, CA (Mohave Desert / Death Valley)
35.872732, -116.231804
http://www.tecopahotspringscampground.com
http://everydayrompn.com/2015/12/28/tecopa-hot-springs-ca-222-22415/
http://hotspringsdirectory.blogspot.com/2004/06/tecopa-county-hot-springs.html
Public facility administered for Inyo County by a private corporation.
Separate bath houses for men and women. Showering before and nudity are
required to avoid contaminating the waters. The hot pool is cement, and
of ample size. Several campgrounds are located across the highway.
Deelight's Hot Spa, less than a mile away, offers cabins, RV Parking and
a few tent spaces.   There are five separate bathhouses, first come
basis. One is open to the sky. The tubs are large and clean. China Ranch
Date Farm is located nearby, and worth the visit.
Season: year-round
Cost: $7
Distance: 509 miles, 7 hrs 51 mins

Saline Valley Hot Springs
Death Valley National Park, Inyo County, CA
36.811992, -117.766447
http://www.mobileranger.com/blog/soaking-in-the-past-at-four-of-californias-hot-springs/
http://www.communitywalk.com/location/saline_valley_hot_springs/death_valley_national_park/california/hot_springssoakable/13843
Season: year-round
Cost: free
Distance: 493 miles, 10 hrs 2 mins

Glamis North Hot Springs Resort
10595 Hot Mineral Spa Rd., Niland, Imperial County, CA
33.424725, -115.681979
Cabins, lodge, tents, RV parking.  Mineral water fed to two therapeutic pools, 14 hot tubs, and a large pool.
http://www.glamisnorth.com/
Season: year-round
Cost: $20 day pass
Distance: 534 miles, 7 hrs 50 mins

Bashford's Hot Mineral Spa
10590 Hot Mineral Spa Rd, Niland, Imperial County, CA
33.426348, -115.682129
145 degrees F
RV hookups and parking
http://bashfords.com/
Season: year-round
Cost: apparently no day use, but free if you stay at the RV park
Distance: 534 miles, 8 hrs 15 mins

Fountain of Youth Spa RV Resort
1500 Spa Road, Niland, Imperial County, CA
33.400359, -115.661837
RV hookups, 6 mineral baths
http://foyspa.com/
Season: year-round
Cost: apparently no day use, but free if you stay at the RV park
Distance: 533 miles, 8 hrs 16 mins

Niland Hot Mineral Spa
West end of Hot Mineral Spa Road, Niland, Imperial County, CA
33.425602, -115.685834
Appears on Google Maps to be a natural hot springs.
Season: year-round
Cost: access not clear
Distance: 533 miles, 8 hrs 16 mins

Agua Caliente County Park Hot Springs / Agua Caliente Springs
39555 Great Southern Overland Stage Route of 1849, Julian, San Diego County, CA
32.950105, -116.302351
101 degrees F / 38 degrees C
Three hot springs pools, day use 9:30am – 5:00pm.
1915 notes: In the valley of Vallecitos Creek, 35 miles SE of Warner Hot
Springs are small, unimproved warm springs known as Agua Calientr
Springs....
http://www.sandiegocounty.gov/parks/Camping/agua_caliente.html
http://studentreader.com/southland-california-hot-springs/
Season: year-round; camping only in non-summer (Sep - May)
Cost: $3/person, $5 for parking
Distance: 524 miles, 8 hrs 37 mins

Big Bend Hot Springs / Lahlahpismah Hot Springs
196 Hot Springs Row, Big Bend, Shasta County, CA
41.019803, -121.907881
http://www.bigbendhotsprings.org/
Developed but primitive facility, hot tubs, natural pools beside the
Pit River. Camping/ RV hookups/ cabins.  As of 2013, the Web site showed
this facility as still closed for ongoing renovation work required by
Shasta County since 2007, but its status is a little uncertain and
could reopen any time.
1915 note:  In the northeastern part of California hot springs,
seemingly related to lava flows and possibly also to local faulting that
has not yet been recognized, issue at a number of places. Such springs
rise along the course of Pit River, the lowermost noteworthy locality
being at Big Bend near Henderson post office, where hot water issues at
numerous places for a distance of about 350 yards along the southern
bank of the river. Near the eastern end of this zone, on a gravel bluff
about 15 yards from the river’s edge, a bathhouse con- taining several
tubs and vapor chambers has been built over one of the largest springs.
The temperature of the water of this spring is 180° and the discharge is
perhaps 25 gallons a minute. Another spring that yields perhaps 8
gallons a minute, of water 170° in tem perature emerges at the south
side of the bathhouse. These springs were formerly on the northern bank
of a creek that entered the river near this point, but about 1897, to
protect the springs, the discharge of the creek was diverted by a ditch
that was cut several yards to the east. The stream has deepened this
ditch to a steep-sided gully in the bed of which hot water forms pools
at two places, and near its mouth a stream of hot water that discharges
perhaps 8 gallons a minute issues from the gravel bluff halfway down its
side. At places about 85 and 150 to 175 yards west of the bathhouse
small amounts of warm water issue near or below high-water mark, and
along the lower 65 yards of the zone of hot springs water with observed
temperatures of 100° to 165° and flows of 4 to 10 gallons a minute
issues in at least six places.  The water is not noticeably sulphureted
and, as it is hard, it probably contains a rather large amount of
calcium.  The upper and lower groups of springs issue from the gravel
that borders the river, but the warm seepages between them issue from a
porphyritic quartz diorite that appears to be intruded into the old
sediments of the locality.
Season: year-round
Cost: TBD
Distance: 300 miles, 5 hrs 2 mins

Hot Springs on Kosk Creek
Shast County, CA
1915 note: About 2 miles north of Big Bend Hot Springs two or three
other thermal springs rise along the bed of Kosk Creek. One of these
flows into a small rock basin and is occasionally used for bathing.  In
general character the springs seem to be similar to the largo group on
Pit River, but their waters are not so hot and their discharges not
nearly so large.

Big Caliente aka Agua Caliente Spring
Los Padres National Forest, Santa Barbara County CA
34.539587, -119.562875
118 degrees F
http://www.soakersforum.com/3/viewtopic.php?f=5&t=654&start=0
Outdoor concrete tub, changing rooms, toilets.  Reached by driving a
very rough dirt road, up the canyon from Pendola Guard Station.
Camping is available a few miles down the canyon in Forest Service
campgrounds, and 3 miles away in state/county campgrounds.
Or:
Highway 154 north from Highway 101, turn right on East Camino Cielo
(Forest Road 5N12/5N123/5N15) at the summit of San Marcos Pass (Hwy 154)
and follow this road for a distance of about 23 miles to the Pendola
Station. Just beyond the station, turn right (north) on Forest Road 5N15
and follow this road approximately 3 miles to the hot springs. Total
driving time from Santa Barbara is approximately 1 hour, 45 minutes.
1915 note:  San Marcos Hot Springs, which are sometimes referred to as
Mountain Glen Hot Springs, are situated about 20 miles by road northwest
of Santa Barbara, in a deep, brushy stream canyon. Warm sulphureted
water rises at about six places in this locality, for a distance
of 150 yards, in the bed of the creek and along its sides. Bathing
pools have been excavated and the place is frequently visited by
campers, who find good camp grounds a few hundred yards below the
springs. As at the Montecito springs, the country rock is sandstone,
which here dips about 30° E.
A fault which has been traced through the valley of Santa Ynez
River passes a few miles north of these springs.
Season: year-round
Cost: free
Distance: 313 miles, 5 hrs 54 mins

Little Caliente
Los Padres National Forest, Santa Barbara County CA
34.535110, -119.630201
98 to 115 degrees F
http://www.soakersforum.com/3/viewtopic.php?f=5&t=654&start=0
In Los Padres National Forest, take Forest Road 5N15 past Pendola
Station to Mono Campground (approximately 5 miles). From here it’s a
short walk to the springs.  Three soaking pools nestled on the side of a
mountain ravine.
Season: year-round
Cost: free
Distance: 305 miles, 5 hrs 19 mins

Hot Springs at Sulphur Bank
Lake County, CA
1915 note: Near the southeast edge of the eastern arm of Clear Lake
there are abandoned sulphur and quicksilver workings. During the period
of mining, water at a temperature of 176° was encountered at the fifth
level in what is known as the Hermann shaft. In January, 1910, the water
stood about 15 feet below the surface in this shaft, and its observed
temperature was 120°. Many bubbles were rising and the water had the
odor of sulphureted hydrogen. About 200 yards east of north from the
shaft, in an area of decomposed basalt where sulphur was formerly
obtained, water stands in several pools and issues from numerous vents.
The highest temperature observed in these pools was 118° in a small one
over which there was a bathing hut. Two analyses of water from this
locality, made a number of years ago, are reproduced, as they probably
show the general character of the water that still rises.

Soda Baths / Soda Bath Springs
Small island 200' off the east shore of Clear Lake, Lake County, CA
39.064086, -122.807562
Pool encircled by a natural rock border, but also built up with a
wall of bricks and concrete.  Because of the newly enclosed space, this
enclosure can be perilous on account of asphyxiation risk, because of CO2
outgassing into the tub.  (There are reports that the extra wall has
now been removed.)
This spring was part of the historic Soda Bay Resort on the adjoining
mainland.  The resort and its walkway to the island were destroyed by
fire in 1940.
http://abcnews.go.com/Technology/story?id=119923
http://www.lakeconews.com/index.php?option=com_content&view=article&id=38119
Season: year-round
Cost: free
Distance: 153 miles, 2 hrs 54 mins

Sespe Hot Spring
Sespe Wilderness Area, Los Padres National Forest, Ventura County, CA
34.594631, -118.998655 springs
34.630172, -119.045933 trailhead
http://askirtinthedirt.com/blog/page/4
Access via a 5 mile arduous downhill hike from Mutau Flat, off Lockwood
Valley Road and Grade Valley Road in Los Padres National Forest (but this
may require crossing Sespe River on foot, raising the risk of flash floods).
There is also a motorcycle trail from the north.  Be alert for the danger
of forest fires, and of flash floods along Sespe River.  Very remote
area, and you will need a Forest Service permit.
Season: year-round
Cost: free
Distance: 320 miles, 5 hrs 12 min to trailhead

Willett Hot Springs
Sespe Wilderness Area, Los Padres National Forest, Ventura County, CA
34.575637, -119.05146 springs
34.549196, -119.166445 trailhead
http://askirtinthedirt.com/blog/page/4
Take CA-33 to Rose Valley Road east to Middle Lion Campground. Hike the
Sespe River Trail 9 miles to Willet Camp, then 6/10 of a mile west and
slightly north to the hot springs.
Season: year-round
Cost: free
Distance: 325 miles, 5 hrs 19 minutes to trailhead

Gaviota Hot Springs
US-101 / CA-1 split north of Gaviota, Santa Barbara County, CA
34.504760, -120.225798
90-100 degrees F depending on season
Exit US-101 northbound at Lompoc / Vanderberg AFB exit, turn right
then immediate second right.  Take dirt road all the way to the end.
Pay $2 parking fee, and it's a clearly marked 1/2 mile hike to the three hot
spring pools, of which the farthest is largest and deepest, and also
less murky/muddy.  Beware of poison oak crowding the trails, and there
are ticks.  At some times of year, midges may be breeding in the pools
and adjoining Los Canovas Creek.
Season: year-round
Cost: free
Distance: 277 miles, 4 hrs 8 mins

Las Cruces Hot Spring
Gaviota State Park, Santa Barbara County, CA
34.476580, -120.252124
100 degrees F, 80 degrees F
http://www.soakersforum.com/3/viewtopic.php?f=5&t=654&start=0
There are two ponds.  A natural, murky hot spring in a pleasant canyon
with substantial vegetation, less than a mile off U.S. Highway 101. A
0.75-mile trail takes you to the spring. Despite its murky appearance,
this hot spring provides a great soak. Surrounding vegetation makes you
feel like you’re in a jungle and keeps the location cool. The main pool
is fed by a small natural hot spring, which maintains a temperature of
about 100 degrees F. The water overflows from this smaller pool as a
waterfall into a larger pool, which is about 80 degrees F. This lower
pool is less appealing, due to moss and algae growth plus large amounts
of leaves and other vegetation falling into it. So far the hot spring
has been kept clean and free of trash, thanks no doubt in large part to
hardworking park rangers. The spring is only open during daylight hours,
since the parking lot closes at dusk.
1915 note:  Las Cruces Hot Springs issue on a hillside about 18 miles
west of San Marcos Hot Springs and 4 miles northward from Gaviota
railroad station on the coast. Four warm springs here furnish about 50
gallons a minute of mildly sulphureted water and in two of the springs
inflammable gas rises. A ledge of calcareous material back of the
largest springs probably has been formed by deposition from the water.
In 1908 there was a bathhouse at the largest spring, and the place was
occasionally visited by campers.  The topographic position of the
springs is worthy of note, as they are in a little swale on the mountain
side one-half mile from and 400 feet above the main drainage canyon of
this region. Thick-bedded sandstone here dips about 30° SW. and strikes
nearly in the direction of steepest slope.
Season: year-round
Cost: park admission
Distance: 279 miles, 4 hrs 6 mins

Feather River Hot Springs / Woody's Feather River Hot Springs
29186 Highway 70, Twain, Plumas County, CA
40.019442, -121.033666
http://www.randrrvparkhotsprings.com/
http://hotspringsdirectory.blogspot.com/2004/08/woodys-feather-river-hot-springs.html
On CA 70, about 5 miles west of the CA 89 junction. Look for two big logs
in front of an old cabin with a chimney. This is west of a small RV park
that is west of a bigger RV park called Crystal Springs.
Season: year-round
Cost: $5/person day rate for a 2 hour soak, honour-system drop box.
Free to guests at R&R RV Park or cabins.  Users need to call ahead.
Distance: 245 miles, 4 hrs 18 mins

Big Hot
Bridgeport, Mono County, CA
CLOSED.  reported closed 2002-06-05
38.233640, -119.223225
Big Hot is on private land about a mile south of Travertine, and now closed
to the public.  Access was via a gate 1.1 miles south of Bridgeport on
the east side of the road.
Season: n/a
Cost: n/a
Distance: 309 miles, 5 hrs 27 min

Murrieta Hot Springs, Calvary Chapel Conference Center Murrieta
39405 Murrieta Hot Springs Road, Murrieta, Riverside County, CA
CLOSED.
33.557832, -117.156094
http://www.mhsretreats.com/
This facility is now part of a religious retreat, and no longer open to
the public.
1915 note:  12.5 files direct SE of Elsinore, eastern side of Murrieta
Valley.  Heated waters arise at the base of a gravel bluff on the border
of an open drainage course.  Three springs arise within 10 yards of each
other, maxiumum temp 136 degrees F, ample flow.
Season: n/a
Cost: n/a
Distance: 440 miles, 6 hrs 36 mins

Buckeye Hot Springs
Bridgeport, Mono County, CA
38.240002, -119.331906
140°F / 60°C
http://hotspringsoak.com/buckeye-hot-springs.html
Three pools flow alongside Buckeye creek from a source on the steep
grassy hillside.
Just north of downtown Brigdeport, turn south on Twin Lakes Road, at the
Shell fuel station. This road leads into fields, and turns towards the
mountains. Follow Twin Lakes Road over 7 miles, and turn in at Doc and
Al's Camp and Cabin resort.  There is a campground and store to the
right. Stay left and the dirt road crosses a creek continuing north
along the hillside.  After 3 miles, the road will cross another creek,
revealing a large open parking lot. Take the right fork just up the
hill, and park immediatly at a small but well used parking area. Several
small trails run down the hillside to the springs.  The springs are on
the side of a steep cliff where the water cascades into pools.
1915 note:  Buckeye Hot Spring is about 5J miles south of west from
Bridgeport and on the north bank of Buckeye Creek, a mile above the
mouth of its canyon and 40 feet above the stream. The water issues with
a temperature of 140°, and perhaps 25 gallons a minute flows down to the
creek over a large domelike overhanging deposit of lime carbonate.  In
1908 a part of the water was conducted across the creek in a small
trough to a cabin in which there were two wooden bathtubs; but
apparently the place was not often visited.
Season: year-round
Cost: free
Distance: 308 miles, 5 hrs 37 mins

California Hot Springs Resort (Deer Creek)
42177 Hot Springs Dr, California Hot Springs, Tulare County, CA
35.880341, -118.673700
122°F / 50°C
http://www.tripadvisor.com/Attraction_Review-g32140-d1478650-Reviews-California_Hot_Springs_Resort-California_Hot_Springs_California.html
http://www.yelp.com/biz/california-hot-springs-california-hot-springs
Just inside the Sequoia National Monument at California Hot Springs.
I-5 south to Kettleman City, CA-43 east through Earlimart and to the
destination in the mountains, just below the snowline.  Camping, RV hookups.
Swimming pool and two large hot tubs (all chlorinated) fed by the hot spring,
adjoining a general store and deli.
White River Campground is nearby.
Separate rental lodging is also available nearby in a bunkhouse or a large
cabin.  Hot springs water is piped into the bunkhouse and cabin at
approximately 125 degrees F.
1915 notes:  35 miles SE of Portersville.  Four springs at points 5 to
20 yards apart along the southern bank of Deer Creek Canyon, 20 or 30
feet above the stream bed.  This group yields about 36 gal/min of water
120 to 126 degrees F.  1/2 mile upstream on the northern side of the
crek, another group of one main and two mintor springs discharges about
1/3 as much water at 106 degrees F.  Recent extensive improvements:
1907, frame hotel and annex, small cottages and tents.  Water from the
upper springs is piped to a tak, thence to the baths and grounds.  Pipes
from the lower group go 275 yards to baths near the hotel.  Springs of
the lower group are also used for drinking.G
http://www.hotspringsrentals.net/
Season: year-round
Cost: $12/person day pass, free for guests.
Distance: 269 miles, 4 hrs 30 mins

Remington Hot Springs
Bodfish (below Lake Isabella), Kern County, CA
35.576198, -118.552437
96 degrees F to 115 degrees F
http://everydayrompn.com/2013/04/01/remington-hot-springs-4113/
http://hotspringsoak.com/remington-hot-springs.html
http://www.treehugger.com/natural-sciences/hot-springs-in-hot-water-preserving-public-use-of-hot-springs-in-california.html
http://www.gilbertgia.com/hist_articles/community/kern_canyon_spirits_com_AG.pdf
http://www.kernvalley.com/news/hotsprng.htm
Following the Kern River from Bakersfield into the Sierra foothills,
take CA-178 to exit #42. Turn east towards the small town of
Bodfish. Turn right (south) when the road forms a T onto the mainstreet
in Bodfish. Then watch for Kern Canyon Road on your right within the
first mile. If the road begins switching back on a steep hill, you have
gone too far. Continue on Kern Canyon Road past a power station and
Sandy Flat Campground. After Hobo Campground, continue 1.6 miles and park
at the second pullout. (There is a small pullout at 1.5 miles, but this
has a very steep trail and is much more difficult to hike from). Hike
down about 200 yards to Kern River, on a heavily used trail. The first
spring is on your left, about 50 yards before the 3 main pools.
Season: year-round
Cost: free
Distance: 302 miles, 4 hrs 53 mins

Deep Creek Hot Springs
6100 Bowen Ranch Road, Apple Valley (near Hesperia), San Bernardino County, CA
34.340578, -117.169469
105 degrees F
http://everydayrompn.com/2012/07/12/deep-creek-hot-springswarm-springs/
http://everydayrompn.com/2012/06/21/deep-creek-hot-springs-52112/
http://askirtinthedirt.com/blog/page/4
http://deepcreekhotsprings.net/
http://studentreader.com/southland-california-hot-springs/
http://studentreader.com/deep-creek-hot-springs/
An undeveloped cluster of outdoor hot springs on private ranchland.  4
mile hike to the creek and hot springs pools.
Exit off I-15 in Apple Valley onto Bear Valley Road and head east for 10
miles. Turn right onto Central Avenue heading south for 3-miles. Turn
left onto Ocotillo Way heading east once again for 2.8-miles to Bowen
Ranch Road. Turn right and follow Bowen Ranch about another 7 miles or
so to where it ends. You’ll see what appears to be an old historic
rustic structure and tollgate displaying a stop sign.
1973 book:  Deep Creek Hot Spring is situated on a prominent
northeast-southwest fault. The hot spring, with its bubbling water,
high-diving rocks, warm sunbathing, and green grass, is a surprisingly
popular and crowded spot at almost any time of the year.
Note that the approach from Bowen Ranch is the shorter (1 hr) walk
but requires crossing the creek, which can be dangerous in winter and
spring (possiblity of flash floods), in which case the 2 hr walk from
Pacific Crest Trail is advised.
Season: year-round
Cost: free, but easiest access from Bowen Ranch charges $5 for access and overnight parking campings, and $4/person for day parking
Distance: 439 miles if approached from the south via San Bernardino and
Lake Arrowhead (Pacific Crest Trail), 7 hrs 58 mins
Distance: 418 miles if apprached from the north via Hesperia / Apple
Valley to Bowen Ranch, 7 hrs 34 mins

Five Palms Hot Springs / Five Palms Warm Well Oasis / Cinquo Palmas Oasis
http://everydayrompn.com/2012/09/07/5-palmsslab-city-hot-springs/
http://hottubbers.org/usa/california/five-palms-warm-well/
http://losangelesswimmin.com/2011/10/imperial-valley-hot-springs/
32.951481, -115.284378
92°F / 34°C
Located on BLM land. Clear water surrounded by palms trees.  Starting at
Brawley, take SR78 east 15 miles, crossing Highline Canal. Take the
second dirt right turn 0.5 miles east of the canal. Go 1.6 miles south
to Five Palms Warm Well Oasis.
Season: year-round
Cost: free
Distance: 575 miles, 9 hrs 26 mins

Dos Palmas Spring
North Shore, Salton Sea, Riverside County, CA
84°F / 29°C
33.509012, -115.827279
http://www.blm.gov/ca/st/en/prog/wildlife/watchable/areas/dospalmas.html
http://www.sci.sdsu.edu/salton/DosPalmasHistory.html
https://en.wikipedia.org/wiki/Dos_Palmas_Spring


Carson River Hot Springs / Leviathan Mine Road Hot Springs
Northeast of Markleeville, Alpine County, CA
CLOSED
38.729109, -119.653225 (approx.)
Hot springs formerly acessable from Leviathan Mine Road, six miles
northeast of Markleeville, on the edge of the Carson River.  Now,
gate is locked and posted no trespassing.
Season: n/a
Cost: n/a
Distance:  262 miles, 4 hrs 54 mins

Dechambeau Ranch Hot Spring
Mono City, Inyo County, CA
38.047067, -119.081573
151°F / 66°C
Reported as of 2003 to be unattractive / dirty.
Morth side of Mono Lake, northeast of Black Point.  Go along Cemetary
Road until you cross Mill Creek, then turn left at the fork and travel
4.5 miles until you reach a three-way fork.  Take the centre fork and
park near a small cabin on the right.  The fenced concrete tub is
extremely hot and should not be touched.  Instead, follow the piped
water to a smaller bathing pond.
Season: year-round
Cost: free
Distance: 331 miles, 5 hrs 52 mins

Dirty Socks Hot Spring
Owens Valley east of Olancha, Inyo County, CA
36.331170, -117.949656
93°F / 34°C
https://www.ocf.berkeley.edu/~fricke/hotspring/
Unmaintained.  Years ago, this was an Inyo County-maintained park.
The county eventually let it go after repeated acts of vandalism.
The temp. is cold for soaking, and there is algae in the pool.
Take Death Valley Road / CA-190, just south of Olancha, off US-395.
Proceed 4.7 miles and turn left/north on the paved road to the springs.
Season: year-round
Cost: free
Distance: 413 miles, 6 hrs 20 mins

Jacumba Hot Springs Spa
44500 Old Hwy 80, Jacumba Hot Springs, San Diego County, CA
32.617263, -116.188546
100 yards north of the Mexican border between San Diego and Yuma just
off I-8. Use the Boulevard or Jacumba exits from the interstate.
20 room motel.
Large outdoor pool fed by mineral springs
Indoor hot pool and dry sauna
Massage services on weekends and others by appointment
Great restaurant & bar favorite of locals & visitors
1915 note:  Water issues at two main points near the channel of a small
creek.  Flow is about 15 gal/min, temp 96 degrees F.  Ranch, supply
store, camping spot.
Season: year-round
Cost: $10 day pass, includes both pools
Distance: 544 miles, 9 hrs 2 mins

Golden Haven Hot Springs Spa and Resort / Lincoln Avenue Spa
1713 Lake Street, Calistoga, Napa County, CA
38.585864, -122.581134
150 degrees F
http://www.goldenhaven.com/
Motel-style lodging.  Mud baths, massages, facials,
Season: year-round
Cost: day pass can be purchased including 1/2 hour massages, or stay at
the resort
Distance: 105 miles, 2 hrs 6 mins

Navy Beach Hot Spring
Mono Lake, near Lee Vining, Mono County, CA
37.940724, -119.015158
95 degrees F
South shore of Mono Lake, part of Tufa Reserve, just off CA-120.
The spring is 1/4 mile west of the parking lot.
Season: year-round
Cost: free
Distance: 339 miles, 6 hrs 20 mins

Paoha Island Hot Spring
Mono Lake, near Lee Vining, Mono County, CA
37.993047, -119.035281 island
38.027510, -119.096861 Black Point
https://dirtyteeth.wordpress.com/2015/02/22/fat-bike-paddle-pedal-exploring-paoha-island-in-mono-lake-ca/
Island (in low water, a peninsula) in Mono Lake.  Spring is extremely hot,
and you'll need to go considerably downstream of the source.  Hot
springs are reportedly somewhere on the south side.
1915 note:  Along the eastern front of the Sierra there are other groups
of hot springs whose existence seems to be closely related to lavas of
recent geologic age. One of the northernmost of these groups is on the
east side of Hot Spring Cove, on Paoha Island in Mono Lake. ( Because of
the hot springs an Indian term (pa-oh-ha) meaning “spirits of the mist”
was applied to the island by Prof. I. C. Russell in The Quaternary
history of Mono Valley, California: U. S. Geol. Survey Eighth Ann.
Rept.,pt. 1, p. 279, 1889.)  The western part of the island is covered
with lake sediments, but the eastern part is formed of black lava, and
on its most southeastern point vapor and small amounts of hot water
issue from numerous crevices.  One spring, which has a temperature of
170° and discharges about 15 gallons a minute, was observed, close to
the water’s edge.
Season: Paoha and Negit Islands are off-limites April 1 to August 1
while gulls are nesting there  Nearest mainland location is Black Point,
Mono Lake Park turnoff east from US-395, 1 miles south of Mono City.
Kayak to Paoha Island from there.
Cost: free
Distance: 310 miles, 6 hrs 21 mins to Black Point,

Red's Meadow Hot Spring
Just past Devil's Postpile National Monument, Madera County, CA
37.618061, -119.073190
CLOSED
Near Devil's Postpile, off CA-203 near Red's Meadow Campground.
http://hotspringsdirectory.blogspot.com/2004/06/reds-meadow-hot-spring.html
Developed hot spring, rumoured to have been closed by the Forest Service
for health reason.
1915 note:  On the eastern side of the meadow, several small thermal
springs issue.  A bathing pool has been made at the largest spring, 120
degrees F.  The pool is excavated in a small deposit of lime carbonate
formed at the spring.
Season: n/a
Cost: n/a
Distance: 350 miles, 7 hrs 22 mins

Sahara Hotsprings / Sahara Motel
66700 5th Street, Desert Hot Springs, CA
33.966197, -116.497845
http://www.yelp.com/biz/sahara-motel-of-desert-hot-springs-desert-hot-springs
Developed resort, has 8 hot springs pools and spas including 4 pools,
salt-bath (hot mineral springs w/epsom salt and desert salt), BBQ grill
picnic area, fantasy land, basketball court.  Day use welcome.  Caters
particularly to Korean families (and is owned by a Korean family).
Season: year-round
Cost: day pass available
Distance: 469 miles, 7 hrs 7 mins

Nurturing Nest Mineral Hot Springs Retreat and Spa
11149 Sunset Avenue, Desert Hot Springs, CA
33.967955, -116.498272
106 degrees F
http://www.nurturingnest.com/home.html
Seven guest rooms furnished in minimalist Zen style, spa, chiropractic,
counseling, massage.
Season: year-round
Cost: $25/2 hours, $5 per additional hour, subject to availability.
Distance: 469 miles, 7 hrs 1 min

Wheeler Hot Springs / Ojai Hot Springs / Matilija Hot Spring
North of Ojai, Ventura County, CA
34.484181, -119.306583
103 degrees F, 95 degrees F
http://ojaihotsprings.com/
http://www.vcreporter.com/cms/story/detail/traffic_at_ojai_hot_springs_to_cool_off/10895/
http://ojaihistory.com/wheeler-hot-springs-new-owners-confront-old-issues/
http://www.hotwaterslaughter.com/hotspring/ojai-hot-springs
Site of a former historic resort that closed in 1997.
Three pools, the smallest hotter than the other two.
North CA-33 from Ojai to Matihija Road on left, winds west for 2 miles
through Matihija Canyon, park where the road becomes single-lane at a
stop sign.  Descend left side of road on a steep trail, smell for
sulphur.
1915 note:  Matilija Hot Springs are situated about 2 1/2 miles below
Vickers Hot Springs and 6 miles NW of the railroad terminus at Nordhoff.
There has been a resort at the springs since about 1890 and improvements
have been added until in 1908 there were accomodations for 200 people.
At the northern edge of the creek, sulphurated water rises, which is
said to have a maximum temp of 116 degrees F.  It is pumped to baths and
to a large swimming plunge about 200 yards downstream.  Two warm sulphur
springs, at which there are cemented drinking basins, also issue on
opposite sides of the creek near the baths.  Each yields about 1 gal/min
of moderately sulphureted water.
Season: year-round
Cost: $13 day pass, with reservation
Distance: 334 miles, 5 hrs 25 mins

Vickers Hot Springs
http://www.soakersforum.com/3/viewtopic.php?f=5&t=654&start=0
1915 note: In Matilija Canyon, in western Ventura County, the
westernmost point of note at which hot waters rise is at Vickers Hot
Springs.  The water here issues at the northeasst edge of the creek from
a low bank of stream gravel and crushed shale.  A hotel and baths were
constructed here in 1873, but the buildings were washed away by high
water in the spring of 1884, and when visited in 1908 the place had
evidently been abandoned for a number of years.  These are said to be
the original Matilija Springs.

Stingleys Hot Springs
1915 note:  About 1/2 mile below Vickers Hot springs, at the southwest
edge of the creek on the property of Mr. S.G. Stingley, thermal water
also issues.  A small pool in which a temperature of 100 degrees F was
recorded has here been used for bathing.  In connection with the thermal
springs of this locality, three small sulphur springs may be mentioned
that have temps of 66, 76, and 65 degrees F.  They issue respectively
1/4 mile west of Stingleys Hot springs, 1/8 mile northeast of them, and
3/4 mile eastward.  The first mentioned is a strongly sulphureted pool
at the base of the canyon slope and was formerly used as a drinking
spring.  The second spring issues from a short tunnel in the hillside
and yields about 2 gal/min of water that furnishes a domestic supply to
Mr. Stingley's home.  This water rises clear but becomes milky from
suspended sulphur after flowing a few yards.  The third spring rises in
a canyon on the property of Mrs. Gertrude A. Lyons and is piped to a
small resort (see Lyons Spring).

Wheelers Hot Springs
1915 note:  Wheeler Hot Springs are situated in the canyon of North Fork
of Matilija Creek and are about 2 1/2 miles north from the Matilija
Springs.  Three warm sulphureted springs rise at Wheelers and the place
has been a resort since 1895.  The Main Hot Spring, 102 degrees F,
discharges about 35 gal/min into a swimming plunge.  The other two
springs, which are known as Bucket Spring and Genoveva Spring, have
observed temps, respectively, of 62 and 75 degrees F.  Each yields about
1/2 gal/min of mildly sulphureted water, and forms a drinking pool.  A
fourth spring, also sulphureted but cool, issues at the side of a small
storage reservoir and yeilds perhaps 5 gal/min.  In 1908, the
improvements at these springs included a hotel and annex, about 35 tent
cottages, a dancing floor, and bathing facilities.  Electric light was
supplied by a small water-power plant.

San Juan Capistrano Hot Springs / San Juan Hotsprings
17 Hot Spring Canyon Road near CA-74, Ronald W. Caspers Wilderness Park, San Juan Capistrano, Orange County, CA
33.592629, -117.514091 nearest point on road
33.548491, -117.560501 trailhead
122 degrees F
http://everydayrompn.com/2014/01/11/orange-county-hot-springs-1814/
https://www.ocf.berkeley.edu/~fricke/hotspring/sanjuan/
Primitive set of seven hot springs with rock-lined tubs at one of the
springs, on the site of what was once a major Victorian resort.  The
other six are reported to be overgrown with brush, too small, infested
with bees, or all of the above.  The largest and best tub is big
enough for three at most.  It is claimed that the bacteria count
in these no-longer-maintained tubs is high, and the Casper Wilderness
Park administration has closed off easy access.  Basically, there is
unlawful nearby access if you jump a fence ot Spring Canyon Road,
and lawful access if you hike many miles from the park main entrance.
1915 note:  Hot springs arise in San Juan Canyon, about 13 miles NE of
San Juan Capistrano.  Two main springs, four minor ones, and several
marshy patchies are here situated on the western side of the canyon on
slopes near the creek.  Highest temp recorded was 124 degrees F, total
yield 35 gallons a minute.  Other warm springs issue in a canyon half a
mile westward.  In 1908, improvements consisted of a small hotel,
bathhouse, and three cottages.  Ample campgrounds; place had been used
primarily as a camping resort.
Season: year-round
Cost: free
Distance: 424 miles, 6 hrs 52 mins

Slab City Springs
626 Beal Road, Niland, Imperial County, CA
33.245442, -115.476664
Concrete cistern fed by a hot spring.  The anarchic, alternative
community Slab City, on the site of long-closed USMC base Camp Dunlap,
is about 300' northeast.
http://everydayrompn.com/2012/09/07/5-palmsslab-city-hot-springs/
http://www.atlasobscura.com/places/slab-city-california
http://losangelesswimmin.com/2011/10/imperial-valley-hot-springs/
http://maebird.blogspot.com/2009/11/no-mans-land.html
Season: year-round
Cost: free
Distance: 547 miles, 8 hrs 37 mins

Holtville Hot Springs
3700 Evan Hewes Hwy, Holtville, Imperial County, CA
32.764387, -115.261555
http://everydayrompn.com/2012/04/02/imperial-valley-hot-springs-4212/
Two pools next to a highway.
http://losangelesswimmin.com/2011/10/imperial-valley-hot-springs/
Season: year-round
Cost: free
Distance: 592 miles, 9 hrs 16 mins

Sulphur Springs
Bitterwater (east of King City), San Benito County, CA
36.293147, -120.984725
73°F / 23°C
Not hot enough to be interesting.
Season: year-round
Cost: access is unclear
Distance: 141 miles, 2 hrs 28 mins

Coalinga Mineral Springs / Fresno Hot Springs
Coalinga, Fresno County, CA
112°F / 44°C
36.144328, -120.555662
http://www.fresnobee.com/sports/outdoors/article19526439.html
Located 18 miles west of Coalinga, off Highway 198.
The site was a well known health and vacation area with a bath house and
hotel supplied with hot mineral springs water. Hotel was in operation
from 1860 until it was destroyed by fire in 1961. The property was
acquired by the Wildlife Conservation Board in 1966 and in 1967 a lease
agreement was signed with Fresno County to be operated as a regional
park.
1915 note:  Fresno Hot Springs are situated on a branch of Waltham
Creek, in the hills of the west side of San Joaquin Valley. Several
small warm springs issue along the west side of the canyon, from beds of
shale and sandstone, which are the principal rocks of this region.  The
springs have long been known and were early improved as a resort. A new
bathhouse was built in 1904 and other improvements have been made, so
that in 1908 there were accommodations for about 200 people. It is said
that the water was formerly warmer, but during recent years it has
become necessary to heat it for the baths.
Season: year-round
Cost: free
Distance: 177 miles, 3 hrs 9 mins

Table Mountain Spring
Parkfield, Monterey County, CA
88°F / 31°C
Not hot enough to be interesting.
35.907333, -120.366987 (location is a little unclear)
Season: year-round
Cost: access is unclear
Distance: 201 miles, 3 hrs 40 mins

Unnamed Spring
Vallejo, Solano County, CA
73°F / 23°C
Not hot enough to be interesting.
38.101050, -122.169083
Season: year-round
Cost: access is unclear
Distaance: 71.9 miles 1 hr 25 mins

Unnamed Spring
1021 Hagen Road, Napa, Napa County, CA
83°F / 28°C
Not hot enough to be interesting.
38.320942, -122.271011
Season: year-round
Cost: access is unclear
Distance: 82.4 miles, 1 hr 40 mins

Unnamed Spring
John Mesa Dairy, Glen Ellen, Sonoma County, CA
70°F / 21°C
Not hot enough to be interesting.
38.356945, -122.508954
Cost: access is unclear
Distance: 79.6 miles, 1 hr 41 mins

Los Guilicos Warm Springs / Morton's Warm Springs Resort
1651 Warm Springs Road, Glen Ellen, Sonoma County, CA
88°F / 31°C
38.394512, -122.550744
http://mortonswarmsprings.com/
Site for picnics, reunions, faily recreation, etc.  Two warm mineral
spring pools, BBQ and picnic sites, wading pool, baseball field,
volleyball court, horseshoe pit.
1915 note: On the banks of Sonoma Creek, about 1J miles southwest of
Kenwood are two springs which yield, respectively, about 2 and 3 gallons
a minute of water at temperatures of 78° and 82°. In 1909 there
was a small bathing pool and an old hall or pavilion at the spring near
the eastern bank of the creek; at the other spring, on the opposite
bank, there was a small pool inclosed by an old bathhouse. The
place was used as a camping resort, and several cottages had been
erected among the trees near by.
Season: May to September
Cost: $15
Distance: 83.7 miles, 1 hr 48 mins

Warm Springs on McEwan Ranch
Sonoma County, CA
Large warm springs that are probably similar in origin to the Los
Guilicos springs and others farther south, issue on the McEwan ranch,
about 1 1/2 miles west of Los Guilicos Warm Springs. A part of their
yield is used for irrigation, but the springs have not been efficiently
developed and improved.

Unnamed Spring
8661 Bennett Valley Road, Glen Ellen, Sonoma County, cA
73°F / 23°C
Not hot enough to be interesting.
38.388791, -122.566759
Season: year-round
Cost: access is unclear
Distance: 87.1 miles, 1 hr 46 mins

Mark West Springs, at Mark West Lodge Event Center and Restaurant
2520 Mark West Springs Road, Santa Rosa, Sonoma County, CA
N 38.55 W 122.72
88°F / 31°C
Mark West Lodge is the oldest resort in California, built in the 1840s,
and rebuilt several times after the original building was destroyed
in a 1979 fire.  In the past, the property was a spa resort, but
currently is solely an event centre.  Hence, apparently no current access
to the hot spring.
1915 note:  In the canyon of Mark West Creek, about 9 miles north of
Santa Rosa, are three warm springs that issue a few yards apart along
the east bank of the creek and supply a small plunge bath and a
bathhouse containing a few tubs. The waters are not notably thermal,
being about 65° to 85° in temperature, but the springs are most
appropriately mentioned in connection with the other thermal springs of
eastern Sonoma County. The waters of the three springs are noticeably
sulphureted. On the west edge of the creek a small, cool, sulphur spring
forms a drinking pool, and five other cool mineralized springs issue on
the property. Of these, Magnesia Spring forms a drinking pool at the
creek side near the baths, and two others, known as Arsenic and Iron
springs, seep from a tuffaceous bank in a small gulch north of the main
grounds. On the west bank of the creek, below the baths, are two other
small iron-stained pools.  The Mark West springs have been improved as a
resort since 1880 or earlier. In 1909 accommodations were provided
chiefly by tents and it was visited mainly as a boating and fishing
resort.
Season: n/a
Cost: n/a
Distance: 94.7 miles, 1 hr 43 mins

Aetna Springs
1708 Aetna Springs Rd, Pope Valley, CA
91°F / 33°C
38.630990, -122.479824
http://www.winemerchant.com/historyproject/misc/naparesort.html
http://www.sfgate.com/bayarea/article/Cool-to-hot-springs-resort-3096721.php
http://www.sfgate.com/politics/article/Historic-Resort-Measure-Losing-in-Napa-County-2785978.php
The 1887 Aetna Hot Springs resort is still here but derelict at last
report (2000), and has 33 buildings of which three including the
historic Winship Hotel were designed by Bernard Maybeck.  Reports
say the 100' hot spring pool is now clogged with tule reeds.
Season: year-round
Cost: access is unclear, condition is doubtful
Distance: 119 miles, 2 hrs 26 mins

Skaggs Springs
3495 Skaggs Springs Rd, Geyserville, Sonoma County, CA
SUBMERGED
135°F / 57°C
38.687787, -123.023216
http://www.ourhealdsburg.com/history/skaggs.htm
This was a large hot springs resort from the 1850s to 1942.  The ruins
and hot spring now lie beneath Lake Sonoma.
1915 note:  Along the southwestern bank of a tributary of Warm Spring
Creek in northern Sonoma County three hot springs issue in a distance of
75 yards. At this locality is one of the oldest resorts of the State,
opened to the public in 1857.  In 1909 water from the lowest spring was
piped to baths, that from, the central spring was piped across the creek
to the laundry, and that from the upper spring rose in a cemented
drinking basin. The observed temperatures were, respectively, 120°,
122°, and 135°, and estimated flows about 7, 5, and 3 gallons a minute.
A fourth spring, which is cool and of small flow, formerly issued from
the sandstone at the creek side 100 yards above the upper hot spring and
formed a drinking pool, but in recent years it has ceased to be
important. In 1909 a frame hotel and about a dozen cottages provided
accommodations for 150 guests, and there is ample space for the erection
of tents.
Season: n/a
Cost: n/a
Distance: 116 miles, 2 hrs 9 mins

Hoods Hot Springs / Fairmount Hot Springs
10 miles W of Cloverdale, Sonoma County, CA
100°F / 38°C
N 38.8, W 123.17
In the canyon of Dry Creek, near the northern edge of Sonoma County.
1915 note:  Warm water issues at Hoods Hot Springs in the canyon of Dry
Creek, near the north edge of Sonoma County. The springs are of
small flow and have been used only locally for bathing. They are
probably the same that have been sometimes referred to as Fairmount Hot
Springs.

Point Arena Hot Springs
111°F / 44°C
N 38.874 W 123.518
1915 note:  In the canyon of Garcia River, about 15 miles by road south
of east from Point Arena.  Property became of a resort in 1895.  In
1910, a hotel, several cottages, and a number of tents provided
accomodations for 100 guests.  A steep trail leads from the buildings,
on the canyon side, to the springs and the stream 200 yards away. Cose
to the southeast side of the stream, two hot springs rise in cemented
basins about 6 feet apart and yield flows of about 1.5 and 3 gallons a
minute of mildly sulphurated water 112 degrees and 110 degrees in
temperature.  The water supplies tub baths in two small houses that are
built over the stream, and a pool in the stream itself is also much used
for bathing.  The springs issue in an area of basaltic lava that extends
for about 8 mils northwestward along Garcia River and probably also for
some distance eastwards from the springs.

Jackson Valley Mud Springs
80°F / 27°C
Not hot enough to be interesting.
39.657644, -123.588079

Pinches Spring
70°F / 21°C
Not hot enough to be interesting.
N 39.697 W 123.478

Sulphur Springs
84°F / 29°C
Not hot enough to be interesting.
N 41.659 W 123.319

Bogus Soda Springs
76°F / 24°C
Not hot enough to be interesting.
41.918465, -122.372895

Klamath Hot Spring
156°F / 69°C
N 41.973 W 122.202

Hot Spring, Fumaroles
On southwest slope of Mount Shasta
183°F / 84°C
41.409285, -122.196335

Tuscan Springs
86°F / 30°C
Not hot enough to be interesting.
N 40.238 W 122.11

Stinking Springs
101°F / 38°C
N 40.223 W 122.747

Valley Springs
75°F / 24°C
Not hot enough to be interesting.
N 38.192 W 120.827

Anderson Springs
10981 Hot Springs Road, Middletown, Lake County, CA
108°F / 42°C
38.773052, -122.705005
1915 note:  Anderson Springs are situated about 5 miles northwest of
Middletown, along a branch of Putah Creek. A resort has been conducted
at this place for many years, and in 1910 a hotel and several cottages
provided accommodations for 150 guests.
Nine springs that differ in character of water emerge at rather widely
separated points on the property, but are reached by paths that form
pleasant walks along the wooded canyon. The Cold Sulphur Spring, which
is the farthest downstream, issues from schistose material at the creek
edge 300 yards east of the hotel. It has been protected by a cement
basin and yields a small flow of cool, clear, rather strongly
sulphureted water used for drinking.  About 400 yards by trail eastward
and southward from the hotel, in a little gulch on the side of a ravine,
is the Sour Spring, which yields a slight flow of water that tastes of
alum. The spring is perennial, but it seems to be supplied by surface
water that becomes mineralized by seeping through crushed sedimentary
material. Across the creek and about 100 yards northeast of the hotel,
in a rock-walled pool at the creek edge, is Father Joseph Spring, which
yields mildly sulphureted water that is pleasant for drinking and is
considered to be a gentle laxative. Belmer Spring is 675 yards west of
the hotel and beneath a' gravel bank at the north side of the creek. The
water rises in a pool a few feet in diameter and also in a barrel sunk
near by. It is much used for drinking, but it tastes disagreeably strong
of sulphides.  The other five springs form a group about 325 yards
farther upstream, where they issue from banks of greatly altered
sedimentary rock.  The Hot Spring, which is the principal one, rises in
a barrel that forms a drinking pool. The water is thence piped to a
small reservoir and a bathhouse near by. This water is mildly
sulphureted and when cooled somewhat it is a palatable drinking water.
Near it are two short tunnels that also yield warm water of similar
character, and a few yards away vapor vents are utilized in small
steam-bath cabinets.  The other two springs are a few yards westward,
across the creek.  One forms a pool about 3 feet across, which is
normally covered with an iridescent film, possibly of iron, and is known
as the Iron Spring.  Efflorescent salts —- probably sulphates of
aluminum and of iron —- crystallize on the adjacent banks. The other
spring is about 60 yards away, in a branch ravine. It yields clear water
that tastes strongly of alum, and the banks near by are also usually
coated with alum.  The waters of these last two springs have been only
slightly used and are not fit for drinking, as they are too astringent.

Castle Rock Springs / Mills Hot Springs / Noble's Springs
Lake County, CA
163°F / 73°C
N 38.768 W 122.717
1915 note:  Castle Hot Springs are situated about 1 mile by steep trail
on the mountain side west of Anderson Springs (Lake 55, p. 89). Basins
or small reservoirs have been excavated and cemented at two hot springs
that issue a few yards apart in a ravine that is tributary to Putah
Creek. The observed temperatures in these basins were 160° and 164°.
Their combined flow—about 8 gallons a minute—could probably be increased
by developing two or three near-by seepages of hot water.
The position of these hot springs high on the mountain side is
worthy of note, and it is also of geologic interest with respect to the
hot springs at Anderson Springs, a mile eastward and 800 feet lower,
and at The Geysers, a few miles northwestward across the range and
1,000 feet lower. In another ravine, about 700 yards by path from
Castle Hot Springs, but perhaps half that distance in a direct line and
100 feet lower two groups of cool sulphur springs seep from the banks.
The rock near the hot springs consists of hard schistose material that
is not greatly decomposed, but near the cool springs it has been
altered, apparently by solfataric action, and is impregnated with
sulphur and sulphate salts.
The property was formerly known as Mills Hot Springs and was at one time
conducted as a small resort, the hot water being used for bathing and
the water of the cool sulphur springs for drinking. In the summer of
1910 the property had recently changed ownership and was being
reimproved as a resort. A hotel, a bathhouse containing a swimming
plunge, and a dancing pavilion were being erected, and several tent
cottages provided accommodations for a few guests.  The buildings are
about one-fourth mile from the hot springs, on a ridge that commands a
good view of the valley of Putah Creek and the mountains eastward.


Little Geysers
210°F / 99°C
N 38.767 W 122.748
1915 note:  About 4 miles above The Geysers, at a locality known as
Little Geysers, vapor and hot water issue in notable amounts. At this
place there is an area of perhaps one-quarter of a square mile on open
slopes within which the rock has been bleached and altered, but the
surface activity of heated water is now mainly confined to an area about
200 yards in diameter. Three small hot springs, seven hot pools, and
four vapor vents were counted here. A cabin has been built near by and a
small bathhouse at one of the springs has been used by miners and, in
summer, by campers. About 250 yards below the cabin the largest hot
spring that was noted in this locality rises at the creek edge and is
used as a drinking pool. It yields about 5 gallons a minute of faintly
sulphureted water, 160° in temperature.


Unnamed Spring
120°F / 49°C
N 38.777 W 122.763

Sulphur Creek
120°F / 49°C
N 38.788 W 122.777

The Geysers
214°F / 101°C
N 38.802 W 122.81
1915 note: THE GEYSERS (SONOMA 4).  The Geysers of Sonoma County have
become widely known, both for their scenic features and for their
scientific interest, but it is only proper to state that there are no
true geysers, intermittently throw- ing out hot water, at this place.
The locality is said to have been first brought to public notice in 1846
by a party of hunters. Its unusual character soon became of more than
local interest, a resort was early opened near the springs, and a hotel
and baths have been erected for nearly half a century. During recent
years several cot- tages and additional bathing facilities have been
constructed, so that in 1909 about 75 people could be comfortably taken
care of. A narrow but well-graded road extends from Cloverdale to the
hotel grounds. In the spring of 1910 a better road was completed from
Healdsburg into the locality, and it was thus made easily accessible to
automobiles.
The main group of hot springs and vapor vents that constitute
the so-called geysers issue on the northern side of the canyon of
Sulphur Creek, within an area that extends about 300 yards along
he canyon side and about an equal distance north from the creek,
nearly the entire active area being shown in Plate X, A (p. 140). In
this area 12 flowing hot springs of note, 10 hot pools, and 12 vapor
vents and areas of vaporous exhalations were counted. A cool iron
spring at the north edge of the creek and a cool sulphureted drinking
spring near its southern bank may be added to the number of springs
in this area. The approximate positions of the numerous vents
are shown on the contour map, figure 1, which is reproduced from a
map of the property that was kindly loaned by the owner, Mr. H. A.
Powell. Most of the springs and vents are along a ravine that
extends northward up the canyon side. Several cooler pools are used
for bathing the feet or the eyes and have received such names as the
Com Spring and the Eye Spring. A number of others have been
given descriptive names such as Teakettle, Wash tub, and Gluepot.
Most of the hot water is strongly acid, or sulphureted, or both.
Crystals of native sulphur and of acid salts are deposited at many
small vents, and efflorescent deposits of Epsom salt are formed under
several overhanging banks. Although most of the springs issue in
the ravine, those of perhaps largest flow issue 175 yards eastward,
on the steep slope 50 feet above the stream. Water from these
springs is piped across the stream and supplies the baths. Vapor
from a large vent at the base of the slope below the springs is also
piped across, and supplies vapor baths. The most noted vent,
which is known as Steamboat Geyser, issues on the slope 150 yards
north of the large springs, it being the single steam vent shown on
the right side of the illustration, Plate X, A. The steam is said to
have issued originally from a small orifice, but a few years ago a
short piece of 1 1/2-inch pipe was firmly inserted over it in a vertical
position. In 1909 the vapor issuing through this pipe had a temperature
of 205°. A steam whistle was at one time attached to the pipe, but its
noise so disturbed the guests that it was removed.


Gordon Warm Springs
Cobb, Lake County, CA
97°F / 36°C
N 38.835 W 122.731
1915 note:  Gordon Hot Spring rises on the eastern side of Cobb Valley
Creek, near the head of a small meadow. A number of years ago this
spring was used to some extent for bathing, but in 1909 the small
bathhouse had been removed and the spring was unused. It yielded about
five gallons a minute of water at a temperature of 92°. The water has a
slightly oily taste, like that at Skaggs Hot Springs.

Pine Cone Spring
14051 Ettawa Springs Road, Ettawa Springs, Lake County, CA
78°F / 26°C
Not hot enough to be interesting.
38.850097, -122.693005

Seigler Springs
12088-12094 Siegler Springs Rd N, Middletown, Lake County, CA
126°F / 52°C
38.874226, -122.690831
http://www.lakeconews.com/index.php?option=com_content&view=article&id=38119
1915 note:  Seigler Springs are situated about 2 miles northwest of
Howard Springs, across a ridge and in the drainage basin of another
creek.  Like Howard Springs, they have been used as a resort for many
years.  The group includes 13 that in 1909 were improved to some extent.
Of this number, 6 are of small flows, range in temperature for 68
degrees F to 107 degrees F, and are used in a minor way for drinking.
Two others, known as the Magnesia and Hot Geyser springs, also used for
drinking, yield perhaps one-eightth and 2 gallons of water a minute, at
temperatures, respectively, of 64 degrees F and 98 degrees F.
A frame hotel, a large stone dining room, and four or five cottages
in 1909 provided accommodations for about 150 guests. In addition
to the mineral water tub and plunge baths, bathing facilities were
provided by a dam across the creek, which made a swimming pool.

Howard Springs / Howard Hot Springs
113°F / 45°C
N 38.858 W 122.67
http://www.lakeconews.com/index.php?option=com_content&view=article&id=38119
1915 note:  About 9 miles southwest of the town of Lower Lake a group of
mineral springs (PI. VI, C, p. 92), several of which are notably warm,
issue in a line about 50 yards long at the base of a slope that borders
the south side of a drainage course. A number of seepages have been dug
out and cemented to form drinking basins, so that about 26 improved
springs may be counted, although the group is said to include 42
springs. Of the 8 springs that are of chief importance 5 are used for
drinking and have been named Bohemia, Neptune, Lithia, and Magnesia
Twins. They have observed temperatures, respectively, of 66°, 70°, 73°,
71°, and 100°. When the writer visited it in 1909, Bohemia Spring
discharged about 1 gallon a minute, while the other three rose in basins
from which there was no appreciable overflow. The largest three springs
are used mainly for bathing.  Of these, the Hot Soda or Hot Sulphur
Spring has a temperature of 110° and discharges approximately 125
gallons a minute into a plunge bath. Excelsior or Borax Spring, with a
temperature of 95° and a flow of perhaps 5 gallons a minute, also
supplies a plunge bath.  Water from Eureka Spring is piped to tub baths,
its temperature being 107° and its yield perhaps 2 gallons a minute.
The springs have been improved as a resort since about 1880. In 1909,
besides a main hotel building and the baths, the improvements included a
large annex to the hotel and four or five small cottages.  Waters from
the Lithia, Bohemia, and Eureka springs were formerly bottled for table
use, but their sale was discontinued several years prior to 1909.

Bad Creek Spring
West of 14360 Big Canyon Road, Middletown, Lake County, CA
38.850092, -122.666882
81°F / 27°C
Not hot enough to be interesting.
N 38.85 W 122.667

Spiers Springs
79°F / 26°C
Not hot enough to be interesting.
N 38.838 W 122.653

Baker Soda Spring
11020 Sky High Ridge Road, Lower Lake, Lake County, CA
76°F / 24°C
Not hot enough to be interesting.
N 38.892 W 122.533

Unnamed Spring
'warm'
Not hot enough to be interesting.
N 38.95 W 122.654

Riviera Beach Spring
93°F / 34°C
N 38.958 W 122.701

Unnamed Spring
'warm'
Not hot enough to be interesting.
N 38.963 W 122.724

Unnamed Spring
95°F / 35°C
N 38.986 W 122.736

Horseshoe Spring
108°F / 42°C
N 38.994 W 122.742
On the shore of Clear Lake

Big Soda Spring
Soda Bay, Lake County, CA
39.007701, -122.788212
90°F / 32°C
On the shore of Clear Lake

Hildebrande Spring
Glenview, Lake County, CA
77°F / 25°C
Not hot enough to be interesting.
N 38.925 W 122.77

Carlsbad Spring
9600 McKinley Road, Kelseyville, Lake County, CA
76°F / 24°C
Not hot enough to be interesting.
38.917920, -122.799976
Four and a half files south of Kelseyville near the
Kelseyville-Middletown Road on Cole Creek.  East of Clear Lake.  There
was a small resort with five sprints within 100 yards of the hotel.
The principal one was known as Arsenic Spring, with 74-degree carbonated
water.  Water was piped to a small bathhouse from a second spring
yielding two gallons a minute, and two other springs were developed for
drinking.  In 1905, a brush fire destroyed the hotel building.

England Springs / Elliot Springs
Kelseyville, Lake County, CA
76°F / 24°C
Not hot enough to be interesting.
38.897054, -122.881743

Highland Springs (north)
SUBMERGED
84°F / 29°C
Not hot enough to be interesting.
N 38.936 W 122.907
Submerged under Highland Springs Reservoir in the 1960s.
http://www.highlandspringstrailsvolunteers.com/the-life-and-times-of-highland-springs.html

Highland Springs (south)
Cherry Valley, Riverside County, CA
112°F / 44°C
N 33.969 W 116.942
Possibly on the grounds of Highland Springs Resort, http://hsresort.com/ .

Soda Spring in Cache Formation
72°F / 22°C
Not hot enough to be interesting.
N 38.95 W 122.572

Grizzly Spring
Next to CA-20 east of Clearlake, Lake County, CA
68°F / 20°C
Not hot enough to be interesting.
N 39.002 W 122.498

Unnamed Spring
81°F / 27°C
Not hot enough to be interesting.
N 39.022 W 122.592

Quigley Soda Spring
82°F / 28°C
Not hot enough to be interesting.
N 39.053 W 122.597

Sulphur Spring
68°F / 20°C
Not hot enough to be interesting.
N 39.088 W 122.525

Elgin Mine
156°F / 69°C
N 39.057 W 122.475
1915 note:  The Elgin quicksilver mine is situated on the western side
of Sulphur Creek, on steep slopes 400 to 500 feet above the stream.
Much work has been done in these mines and occasional rich pockets of
cinnabar have been found, but the tunnels have been very difficult to
work in because of the high temperature, the hot water, the sulphureted
and ammoniacal vapors, which affect the eyes as well as the respiration,
and the acid salts, which quickly destroy clothing.  In addition to the
cinnabar considerable amounts of sulphur were ormerly obtained from
higher slopes near the quicksilver tunnels, and a few hundred dollars
worth of gold is said to have been obtained incidentally from one
quicksilver working.
Hot springs, from which water was formerly piped down the slope to a
bathhouse at the original Wilbur Hot Springs resort, still yield a flow
of several gallons a minute on the steep slope, and a short distance
away a flow of about 10 gallons a minute at 140° temperature issues from
the Judge Moore tunnel, which extends 200 feet into the hill.

Abbott Mine
86°F / 30°C
Not hot enough to be interesting.
N 39.022 W 122.444

Jones Fountain of Life Spring / Jones Hot Springs
142°F / 61°C
N 39.033 W 122.445
Colusa County, 3/4 mile west of Wilbur Hot Springs
1915 note:  Jones Hot Springs are near Sulphur Creek and about
three-fourths mile west of Wilbur Hot Springs (Colusa 9, p. 99). The
resort that has been built up at the place in recent years is patronized
during the summer by many people who use the water. Accommodations for
guests are supplied by a hotel and several cottages and by camping
grounds near by.
The principal yield is from a well that was bored near the creek at
a place where gas formerly issued. Hot, sulphureted, salty water
was obtained, which rises under considerable artesian pressure in a
concrete tower to a height of about 12 feet, whence it flows to a
bathhouse near the hotel. Gas intermittently rises with the water and
causes it to spurt above the top of the tower. This characteristic
has led to the well being named Fountain of Life.


Blank Spring / Blancks Hot Springs / Manzanita Mine Springs
3375 Wilbur Springs Road, Williams, Colusa County, CA
112°F / 44°C
39.031025, -122.432365
1915 note:  A number of years ago there was a small hot-spring resort,
known as Blancks Hot Springs, about half a mile west of Jones Hot
Springs (Colusa 11, p. 103). When the Wideawake mining shaft was sunk
near by, Blancks Hot Springs ceased flowing and the resort was closed,
but of late years, since the shaft has been abandoned and has become
partly filled up, the springs have resumed their flow. In 1910 there
were two springs in a small ravine behind a former room- ing house. One
of them yielded perhaps 2 gallons a minute from a vertical pipe that
extended a foot above the surface, and the other, a few yards away,
discharged about an equal amount through a pipe that extended to a tub
in a small bathhouse near by.
1915 note:  Between Jones and Wilbur hot springs, on a strip of land
that is part of the Manzanita mining property, similar hot sulphur
springs issue in at least three places. The spring farthest east, which
has been mentioned in connection with Wilbur spring No. 1, forms a pool
a few feet in diameter that yields perhaps 1 gallon a minute of
sulphureted, salty water, 110° in temperature. It is clear and
distinctly yellow in color, like that of the Main Springs at Wilbur’s,
and like the latter shows a deposit of sulphur on its surface. In 1910
the spring was protected by a roof and was occasionally used as a foot
bath. Another spring farther upstream, on the northwest edge of the
creek, was protected by a tent and used for bathing; the third spring is
about 100 yards northeast of Jones’s Fountain of Life spring. The third
spring, which is between the creek and the wagon road, issued from a
wooden curbing near an old, unused bathhouse and yielded perhaps 1J
gallons a minute of sulphureted salty water, 142° in temperature.

Pseudo Complexion Spring
81°F / 27°C
Not hot enough to be interesting.
N 39.198 W 122.505

Bartlett Springs
East of Bartlett Springs Road, Lake County, CA
144°F / 62°C
N 39.183 W 122.7
The springs were discovered by Green Bartlett in 1869, who took the
waters and claimed it relieved his rheumatism. Bartlett founded a
resort that could accommodate 500 guests.


Newman Springs
94°F / 34°C
N 39.196 W 122.714

Unnamed Spring
90°F / 32°C
N 39.2 W 122.725

Crabtree Hot Springs
Mendocino National Forest, Lake County, CA
106°F / 41°C
39.289875, -122.822230
1915 note:  Crabtree Springs are situated in a narrow part of the canyon
of Rices Fork of Eel River, 14 miles by road northwest of Bartlett
Springs (Lake 9, p. 200). The springs were filed on by Mr. Crabtree
about 1875 and a road was built to the property, but high water soon
washed out the greater part of this road, and for many years the springs
have been accessible only by trail. In 1910 the property changed
ownership, however, and the road was rebuilt.  The principal spring
emerges at the northeast edge of the stream in a natural rock basin at
the foot of a small cliff, and yields perhaps 10 gallons a minute of
water 105° in temperature. Considerable gas, probably carbon dioxide,
issues with the water. The latter is mildly carbonated and is distinctly
mineralized by salts of soda and probably also of iron. The pool formed
by this spring has long been used for bathing and the water is locally
considered efficacious in the treatment of skin and blood diseases.
About 20 yards southeastward, upstream from the main spring, a smaller
flow of similar water issues from a seam in the rock at the creek edge,
while 100 yards upstream from the main spring there were, in 1910, three
vigorously bubbling, iron-stained pools that contained water 68° to 75°
in temperature. An area several yards in diameter in the creek channel
near by was also vigorously bubbling. It is said that there was formerly
a carbonated spring of considerable flow at this spot, but that it was
buried by a landslide a number of years ago and during recent years has
been in evidence chiefly by the large amount of gas that escapes.  The
springs are probably submerged during periods of high water, but during
the summer the stream carries only a few^niner’s inches, and in some
years may become dry for a short time.

Fouts Springs / Champagne Springs
Colusa County, CA
79°F / 26°C
Not hot enough to be interesting.
39.347975, -122.666069
The place is named for John F. Fouts who discovered the springs here in
1873.  The springs supported a resort capable of hosting 150 guests that
operated here in the early part of the 20th century.

Sulphur Spring / Salt Spring
75°F / 24°C
Not hot enough to be interesting.
N 39.43 W 122.538

Muir Springs
68°F / 20°C
Not hot enough to be interesting.
N 39.429 W 123.308

Bishop Warm Springs
Eastern Sierra Nevada

Squaw Bath Hot Springs
Surprise Valley

Siphon / Little Hot Creek / Little Hot Creek Spring
Antelope Spring, Inyo National Forest, near Mammoth Lakes, Inyo County, CA
180 degrees F
Little Hot Creek Springs are well-reviewed. It is less visited than the
other springs, but has tubs and allows camping.
http://studentreader.com/long-valley-caldera/


Dehy Hot Spring
Owens River Road, near Mammoth Lakes, Inyo County, CA
134°F / 57°C
N 37.677 W 118.79
134 degrees F
http://www.communitywalk.com/location/dehy_hot_springs/info/13304
http://studentreader.com/long-valley-caldera/
These hot springs, located near the county landfill are on LA Dept. of
Water and Power land. The LADPW do not want a new, permanent soaking
location on their land for legal reasons. As such, locals have
periodically built tubs at this location over the last several decades,
and the LADWP have always torn them down. On my last visit at in July of
2006, these springs were not soakable.

Hunt Hot Springs
Big Bend, Cascade Range, Shasta County, CA
136°F / 58°C
41.033831, -121.931611
50 miles NE of Redding.  CA-299 about 35 miles to Big Bend Road (exit is
for the town of Big Bend). Turn north (left) on Big Bend Road and follow
it about 17 miles to Big Bend. After you reach the general store in Big
Bend, drive across the Pitt River Bridge. After .8 miles, FS 3702 turns
to the right and merges with FS 11. Follow FS 11 for 100 yards, then
park (due to road erosion, it is iffy as to how far you can drive up
this forest service road). Walk on FS 11 until you see the first dirt
road on your left. Walk down the dirt road. When it forks, go right.
Continue walking one mile to the river, past the Wright Historical
Cemetery.
The springs are located along Kosk Creek, near its confluence with the
Pit River.  Several hot springs emerge from the side of the hill, some
of which feed a large concrete tub at the water's edge.  Although the
hot springs are located at the end of a relatively rough road in an
isolated part of the state, they are well known.  Your best bet for
solitude is during the week.  Nevertheless, the location is nice, and
it's worth a visit.  The large concrete pool is generally 102 degrees F,
though it does vary.  Several other smaller concrete tubs are nearby.
http://weekendsoutdoors.blogspot.com/2008/08/hunt-hot-springs.html
http://www.hotwaterslaughter.com/hotspring/hunts-hot-spring

Hunt Hot Springs is in a spectacular valley near Mount Shasta. There are
several 105F rock and cement pools fed by the hot spring, including one
that holds four people. There is also a soaking tub.
Because Eric and I read up on Hunt Hot Springs, we knew to bring along a
bucket to carry water from the nearby creek so we could cool down the
pool a bit. Made all the difference in the world.

Kosk Creek Hot Springs
104 degrees F at the source.  Pool temp is generally 100.
Immediately downstream of Hunt Hot Springs.  A large concrete and rock
pool is immediately adjacent to the creek.
Up and over the hill from Hunt Hot Springs is a really special place: a
tiny, two-person rock pool called Kosk Hot Springs. This one was built
by volunteers. Because it is tucked away, this spring is a hidden jewel.
The pool is warmed by 104-degree water.  Don't try the road when it is
wet.
About 55 miles east of Redding.

Iva Bell Hot Springs / Fish Creek Hot Spring
Near Iva Bell Campground.  12-mile hike south of Red's Meadow Campground.
110°F / 43°C
37.531512, -119.025546
1915 notes:  At the head of the Fish Valley and 3 or 4 miles eastward
from a carbonated spring in this valley are two warm springs and a
subsidiary seepages on the mountain side.  The springs yield only
small flow, are not near a main trail, and have not often been visited.

Pyramid Hot Spring
along the upper Kern River
http://everydayrompn.com/2015/12/28/pyramid-hot-spring-62215/
http://www.treehugger.com/natural-sciences/hot-springs-in-hot-water-preserving-public-use-of-hot-springs-in-california.html

Miracle Hot Springs/ Clear Creek Hot Springs / Hobo Springs / Compressor Hot Springs
Below Bodfish, Tulare County, CA
DEMOLISHED
35.576164, -118.533992 (estimated)
119 degrees F
http://www.gilbertgia.com/hist_articles/community/kern_canyon_spirits_com_AG.pdf
http://www.kernvalley.com/news/hotsprng.htm
Rock tubs demolished by Forest Service and USMC due to trash and vandalism
problems.  Was located at Forest Service's Hobo Campground.
1915 notes:  Hot water issues at three or four places among the boulders
at the southern edge of Kern River 200 yards below the mouth of Clear
Creek.  In 1907, the springs were seldom visited, but a few years
earlier, during the construction of a power canal nearby, they were made
use of by the workmen for bathing and washing and became known locally
as the Hobo Springs.

Sycamore Hot Springs
RV and camping

Coso Hot Springs
Gill Station Coso Road, Coso Junction, South of Mammoth Lakes, Mono County, CA
207°F / 97°C
36.046128, -117.770363
https://www.ocf.berkeley.edu/~fricke/hotspring/

Canyon Guadalupe Hot Springs
https://www.ocf.berkeley.edu/~fricke/hotspring/sanjuan/index.html

Arrowhead Hot Springs
San Bernardino Co.
34.186660, -117.263642
110 to 145 degrees F, 22 degrees F
1915 note:  Western base of the San Bernardino Mountains:  Granitic
slopes about 7 miles east of north from San Bernardino and about 500
feet above the valley land.  Find it by seeing an area of scanty
vegetation in the shape of an arrowhead several acres in extent, on the
mountain side above the springs.  Springs are in two groups about 400
yards apart.  The upper group comprises about six springs, temp. about
110 to 145 degrees F.  Water is confined in two concrete storage basins.
This is on a mesa north of where the hotel was.  Lower group, also
six springs, has the hotter water, measured at 202 degrees F in the
basin.  This group is in a ravine to the west.  Hotel and baths burned
around 1910.

Waterman Hot Springs
San Bernardino County, CA
34.186660, -117.273566 (estimated)
1915 notes:  3/4 mile west of Arrowhead Hot Springs, from fissures in
the granite on the eastern side of Waterman Canyon.  Flow of water was
slight in 1908.

Tyler's Bath:  Warm Spring in Lytte Canyon
San Bernardino
1915 note:  13 miles NW from Waterman Hot Springs.  Unimproved spring,
low flow, water only about 90 degrees F.

Warm Spring at Baldwin Lake
San Bernardino Co.
1915 notes:  Baldwin Lake is a small intermittent water body at the
upper end of Bear Valley in the S.B. Mountains.  In a marsh at the
western end of the lake, warm water rises in a pool 20' in diametre.
Flow is slight, temp only 88 degrees F.

Harlem Hot Springs
San Bernardino Co.
1915 note:  Diverted hot spring (well casing diverted the water for
bathing and irrigation) on the alluvial slope 2 miles below the base of
the S.B. Mountains.  Collected spring water feeds swimming plunge and
tub and mud baths at a recreation and picnic ground.

Urbita Hot Springs
San Bernardino Co.
1915 note:  Recreation park 1 mile south of S.B.  Artesian wells supply
a plunge, tub baths, and a small lake.  Warmest well yields 200 gallons
a minute of mildly sulphurated water at 106 degrees F.

Fairview Hot Springs
Costa Mesa, Orange County
LOST TO SUBURBIA
96°F / 36°C
33.668675, -117.918879
http://www.ocregister.com/articles/hotel-640968-springs-fairview.html
1887's Fairview Hotel at the present-day intersection of Merrimac Way
and Harbor Boulevard, was a three-stury luxury hotel with a 60' x 100'
swimming pool at the hot springs.  All trace of the establishment and
the hot springs vanished by the 1950s.
1915 note:  In coastal plain south of Santa Ana.  This was originally a
natural flow.  Casing was sunk to 700' to make an artesian well.  In
1908, hotel and cottage lodged 50 people.  96 degrees F, supplies a
swimming plunge and tub baths.  Discharge is somewhat seasonal, measured
at 15 gal/min in December.

Eden Hot Springs
Riverside County
109°F / 43°C
33.895163, -117.055380
http://studentreader.com/southland-california-hot-springs/
1915 note:  Western base of San Jacinto Mtns. has several hot springs.
Eden is the northernmost of these:  ~7 small springs within 100 yards at
the base of a steep granitic slope.  Hottest is about 100 degrees F.
Small resort, cottages, tents, bathhouse, small swimming pool.

Gilman Hot Springs / Gilman's Relief Hot Springs, San Jacinto Hot Springs
19748 Gilman Springs Road, San Jacinto, Riverside County, CA
CLOSED TO PUBLIC
117°F / 47°C
N 33.835 W 116.988
http://www.freezone.org/gilman_hot_springs.htm
https://whyweprotest.net/threads/gilman-hot-springs-before-it-became-scientology-gold-base.108654/
This small former resort area was bought by the Church of Scientology in
1978 and adapted for its 'Gold Base' / 'International Base'.
1915 note:  At the valley edge, 6 miles SE of Eden Springs.  ~6 springs
issue from a bank of granitic alluvium and form a marsny area of several
acres.  Hotel, cottages, tents.  Tub baths, mud baths.

Ritchey Hot Springs
Riverside Co.
1915 note:  5 miles SE of San Jacinto Springs, near base of the
mountains, along the side of a ravine.  Six springs, 70 to 11 degrees F,
used for domestic use and irrigation.

Pilares Hot Spring
Riverside Co.
1915 note:  In the channel of the San Jacinto River, ~6 miles from the
base of the S.J. Range, warm water rises and forms a tule area.

Palm Springs (not the town) / Aguas Calientes
Riverside Co.
At the southern base of S.J. Peak, rise of water at 100 degres F, used
for bathing and a small health resort on the edge of the desert.

Elsinore Hot Springs
Riverside Co.
1915 note:  NE side of Elsinore Lake.  Most hot springs ceased to flow
when Elsinore Lake was filled, but shallow wells here still produce.
Large bathhouse built 1888 near railroad depot.  Large swimming plunge,
tub, mud baths, Lakeview Hotel.

Bundys Elsinore Hot Spring
Riverside Co.
1915 note:  Another resort about 250 yds north of Elsinore depot.  Used
for drinking, bathing, hotel, cottages.

Warner Hot Springs
31652 Highway 79, Warner Springs, San Diego Co. CA
33.282948, -116.633994
Currently a developed resort:  Steam room and sauna, outdoor hot spring
pools, full-service salon with manicure and pedicure stations.
1915 note:  Eastern edge of Warner Valley, near base of the Palomares
Mtns. in north S.D. County.  Half a dozen or more vents in a ravine, 150
gal/min, 139 degrees F.  Water piped to wooden tank, then bathhouse.
1973 booK:  Warner Springs, at the end of this sec- tion, is the last
supply point. This little resort community is clustered around a
rejuvenating hot spring on the Aguanga Fault. Now a private spa,
Warner Springs Ranch boasts a fine restaurant, restful bungalows,
invigorating massages, and hot-spring soaks. Golf, tennis, horseback
riding, and glider rides round out the experience.
http://www. warnersprings.com/
https://www.wildernesspress.com/assets/eBooks/PCT-SoCal-eBook.pdf
https://www.warnerspringsranchresort.com/

Agua Tibia Spring
92°F / 33°C
N 33.363 W 117.017
1915 note:  Southern base of Agua Tibia Mountain, 25 miles in a direct
line north of west from Warner Hot Springs, warm water (agua tibia )
issues along a fault zone parallel to the one in Warner Valley.  The
water arise with a temp of 92 degrees F, in a marshy area that covers
perhaps an acre.  It is conducted from a board-curbed pool to tubs in a
nearby house for bathing and laundry.

Deluz Warm Springs / De Luz Warm Springs
San Diego Co.
85°F / 29°C
33.414481, -117.299853 (estimated)
1915 note:  In the bed of Deluz Creek, near the NW boundary of SD
County, warm water rises.  Three springs, 84 to 88 degrees F, 5 gal/min,
Camping and rest resort and small hotel opened in 1888-9.

Hot Springs Near Kernville
Kernville, Tulare County, CA
35.793542, -118.446 (estimated)
1915 notes:  About 2 miles NE of Kernville, at the base of steep slopes
on the eastern side of the river valley, warm water seeps out at several
places, but the main point of issuance is in a small marshy area in an
open cove on the valley side.  A small frame bathhouse has been erected
and is used locally.  Temp of the water is around 103 degrees F and its
flow is small.
RM notes:  With the filling of Lake Isabella, historic Kernville
was inundated.  The current Kernville is some miles away.

Neills Hot Spring
Kernville, Tulare County, CA
35.665610, -118.447709
1915 notes:  About 7 miles west of south (RM: SSW) from Kernville, hot
water rises near the centre of Hot Spring Valley, about 1 miles east of
the present channel of the Kern River.  There is a small seepage pool 75
yards from the main spring, but the entire flow is now from one vent.
About 40 feet of well casing was sunk into this spring a few years ago,
and hte yield was thereby materially increased.  The water has a temp of
131 degrees F and a flow of 115 gal/min, and is used for domestic
purposes and for irrigation.   (RM:  Probably in the middle of Lake
Isabella, these days.)

Delongeha Hot Springs (Kern River)
CLOSED.  Private property and off limits
35.5574, -118.6117
112°F / 44°C
http://www.treehugger.com/natural-sciences/hot-springs-in-hot-water-preserving-public-use-of-hot-springs-in-california.html
http://www.kernvalley.com/news/hotsprng.htm
http://www.gilbertgia.com/hist_articles/community/kern_canyon_spirits_com_AG.pdf
1915 note:  Western edge of Kern River, ~6 miles below the Clear Creek
springs, group of three hot springs named after a prospector.  They
issue a few feet above the river surface from crevices in fractured,
massive granite.  In 1908, there was a resort consisting of a small
hotel and two bathhouses.  The flow of two of the springs was collected
in cement basins and used in the bathhouses, which were perched on the
rocks above the river.  The third issues too close to the river.

Democrat Hot Springs (Kern River)
30401 CA-178, ~30 miles NE of Bakersfield, Kern County, CA
35.528504, -118.667514
115°F / 46°C
http://www.treehugger.com/natural-sciences/hot-springs-in-hot-water-preserving-public-use-of-hot-springs-in-california.html
http://www.gilbertgia.com/hist_articles/community/kern_canyon_spirits_com_AG.pdf
http://www.democrathotsprings.com/
http://www.kernvalley.com/news/hotsprng.htm
1915 notes:  Hot water issues on the southwest side of Kern River,
within 150' of its edge but 50' or 75' above its surface.  In 1908,
there was a substantial hotel.  One spring had a temp of 115 degrees F
and furnished the supply for bathing.  400 yards downstream from this
spring, and near the hotel, a reservoir has been constructed around
other warm springs.  At a third place, another small spring forms a
drinking pool.
Season: year-round
Cost: access limited to people attending private events at the resort
Distance:

Scovern Hot Springs (Kern River)
5838 Lake Isabella Blvd, Lake Isabella, CA
CLOSED.  Private property and off limits
35.620830, -118.474869
115 degrees F
Resort burned in 1971, and only a vacant lot remains.  Flow is 140
gal/min.
http://www.treehugger.com/natural-sciences/hot-springs-in-hot-water-preserving-public-use-of-hot-springs-in-california.html
http://www.gilbertgia.com/hist_articles/community/kern_canyon_spirits_com_AG.pdf
http://www.kernvalley.com/news/hotsprng.htm

Williams Hot Springs
1915 note:  At the north edge of Walker Basin, ~10 miles SE of the
canyon of lower Kern River, on the Williams ranch, is a group of small
thermal springs.  One spring, 97 degrees F, yields about 8 gal/min of
water that supplies a private bathhouse.  Another, 150 yards east, temp
75 degrees F, furnishes a domestic supply.

Paradise Springs
North of Barstow, western San Bernardino County
35.143815, -116.813926
1915 notes:  In the desert of western San Bernardino County, there is an
isolated group of thermal springs 25 miles north of Daggett, on the
eastern slope of a granitic mountain.  Two warm springs and a few
seepages issue in a belt 250 yards long, on the side of a wide drainage
slope that opens southeastward to the desert.  The highest temp observed
was 102 degrees F, total flow is perhaps 25 gal/min.

Jordan Hot Springs
Tulare County, CA
36.221414, -118.350507 (estimated)
1915 notes:  On tributary of the upper Kern River, forms prominent deposits
of lime carbonate.  ~14 springs issue in a little flat along the banks
of Ninemile Creek.  Four have been excavated to form bathing pool;
several others are used as drinking springs.  Principal springs used
range from 95 to 123 degrees F, yield from 1 to 10 gal/min.

Blaney Meadows Hot Springs / Blayney Meadows Hot Springs
Fresno County
37.234440, -118.882046
http://www.gardenbetty.com/2012/09/a-little-big-birthday-adventure-at-florence-lake/
http://keithblayney.com/Blayney/Meadows.html
1915 notes:  ~75 miles northward from Jordan Hot Springs, in the canyon
of South Fork of San Joaquin River, about a mile above the upper end of
Blaney Meadows, three or four small springs issue on each side of the
river, and, like Jordan Springs, are used as a mountain camping resort.
They have been dug out to form bathing pools.  Water was a max. temp of
~110 degrees F, and yield on each side of the river is perhaps 20
gal/min.

Lower Springs on South Fork of San Joaquin River
Fresno County
~10 miles below Blaney Meadows Springs, on the south side of the stream,
another group of hot springs and seepages forms a considerable area of
moist land on the slopes above the river.  The four largest springs are
used as bathing pools by campers during summer months.

Hot Springs on North Fork of Little Sur River
Big Sur, Monterey County
1915 notes:  Several thermal springs arise in the bed and along the
banks of North Fork of Little Sur River, about 2 miles above the point
at which the stage road crosses the stream.  The springs in the stream
bed form a warm pool, and on its right bank two or three flows, having a
maximum temp of 114 degrees F, issue from crevices in the rock and fill
a small natural basin.  The springs are in a narrow, rugged section of
the canyon, in a granitic area.
36.329462, -121.833136 (estimated)

Warm Springs in Elizabeth Lake Canyon
Los Angeles County, CA
34.662211, -118.394100 (estimated)
1915 note:  In Elizabeth Lake Canyon, about 25 miles east of the Sespe
springs, there is a small group of thermal springs. They are not of high
temperature nor notable flow, however, and are seldom visited. The San
Andreas fault line is mapped as passing about 8 miles north of these
springs, and its proximity suggests that the existence of the warm water
may be due to subsidiary fracturing of the rocks where it issues.

Montecito Hot Springs
1915 note: Montecito Hot Springs are situated about 5 miles northeast of
Santa Barbara, in a canyon on the steep mountain side. At this
place 11 separate springs may be counted, which issue from seams in
thick-bedded sandstone at the upper boundary of an area of shale
that geologically overlies the sandstone.1 These springs range in
observed temperature from 1110 to 118°, and in discharge from about
2 to 10 gallons a minute. The total yield is probably not far from 50
gallons a minute. All of the springs are mildly sulphureted and
seem to be otherwise of similar mineral character.

Newsoms Arroyo Grande Warm Spring
San Luis Obispo County, CA
1915 note:  Newsoms Arroyo Grande Warm Spring is situated in a small
open canyon 2% miles east of the town of Arroyo Grande, in San Luis
Obispo County. The spring yields about 15 gallons a minute and rises in
a board-curbed pool that supplies tub baths and a small swimming plunge.
The temperature of the water is 98°. The water tastes moderately
sulphureted, and a small amount of sulphur is deposited along the
run-off channel. A small amount of acid salt also forms on the curbing
of the spring, and when these salts are placed in the water, which is
clear, a black precipitate that is probably iron sulphide immediately
forms. The constituents render the water unsuitable for laundry uses,
but they are not objectionable for bathing.  The property has been open
to the public as a resort since 1864.
In 1908 there were accommodations for about 30 people in a hotel
building and small cottages. The baths have been much patronized
on Sundays by people from Arroyo Grande, and the water has been
carbonated and bottled by the local soda works.

Pecho Warm Springs
San Luis Obispo County, CA
1915 note:  In the canyon of Islay Creek, west of San Luis Obispo, and
about 2 miles from the coast, are two warm, disagreeably sulphureted
springs which are known as Pecho Warm Springs. When visited in 1908
there was a wooden trough tub and a screen of gunny sacking at the
larger spring, while the other was used only as a drinking pool.  Their
observed temperatures were 95° and 72° and their flows, respec- tively,
about 15 gallons and 2 gallons a minute. The larger spring issues at the
creek edge, at the base of a 10-foot bank of crushed shale, the other
rises about 150 yards farther downstream, and at the roadside 10 yards
from the creek.
The place has long been resorted to on holidays by picnic parties
from the neighboring sheep and cattle ranches; but it has been
comparatively seldom visited by campers, as it is not a desirable spot
for a vacation retreat.

San Luis Hot Spring
San Luis Obispo County, CA
1915 note: Southward from San Luis Obispo and near the ocean is a resort
of considerable importance that utilizes the artesian flow of an
unsuccessful oil well. This well was begun in the fall of 1885 and
abandoned in March, 1887, when at a depth of 937 feet. Quantities of gas
and warm, sulphureted water were obtained, but no oil was yielded. A
number of years ago the water is reported to have had a temperature of
103° and discharge of 100 gallons a minute. In 1908 a temperature of
107° was recorded. The discharge seemed to have materially decreased but
was not measured.  The well is located-at the south edge of the canyon
of San Luis Obispo Creek, 100 yards from the stream and at the border of
a sycamore grove. A resort was early established here, and the place
became known as Sycamore Spring, but in recent years the name was
changed to the present title. Extensive accommodations have been
provided, and the creek is made use of for boating. The rocks exposed in
this locality consist of shales and sandstones of Miocene or Pliocene
age which dip mainly to the north or northeast. Anticlinal or low-arched
structure which would be favorable to the existence of oil was not
noted, though it may exist.

Bimini Hot Spring
Los Angeles County, CA
1915 note: In connection with San Luis Hot Spring, two hot-spring resorts
on the outskirts of Los Angeles may properly be mentioned here,
as they are also unsuccessful oil wells in which flows of warm water
were obtained.
Bimini Hot Spring has been improved as a bathing resort, and
also as a sanitarium, since about 1903. Tub baths and three large
swimming plunges are here provided, and the place is extensively
patronized by bathers. A sanitarium hotel near by is also
conducted under the same management. The well is reported to yield
100 gallons a minute of water 104° in temperature. An analysis
of the water is tabulated beyond for comparison with that of
another warm artesian well of the locality. The primary alkalinity
of the water gives it a peculiar soft feeling that has led to the
appellation “the velvet baths.”
The well is said to have been drilled 1,750 feet deep in the
sediments of Tertiary age that make up the oil formation of this locality.

Radium Sulphur Spring
Los Angeles County, CA
1915 note: About 2 miles northwest of Bimini Hot Spring a sanitarium was
started in 1905 at another unsuccessful oil well. In 1908 the
property changed ownership, and improvements were made, consisting
of a pumping and heating plant for the water, a number of
bathtubs, and offices and rest rooms. The water is claimed to be notably
radioactive. In the fall of 1908 it was placed on the local market
as a table and medicinal water.
The well at the Radium Sulphur Spring was drilled to a depth
of 1,000 feet or more in the oil formation. A strong flow of water
was encountered, which was with difficulty shut off, but several years
prior to 1908 the well ceased to flow.

Paso Robles Hot Springs
San Luis Obispo County, CA
1915 note:  Thermal waters issue at a number of places near Paso Robles,
in the upper portion of Salinas Valley. As early as 1865 a warm
sulphureted spring in the southern part of the town was improved for
bathing, the spring being cemented and covered by a large masonry dome,
and a swimming plunge being constructed. Another spring near by was also
inclosed by masonry walls and made use of for bathing. These springs
have been abandoned for several years, however, apparently because they
have nearly or entirely ceased to flow.  Hotel El Paso de Robles was
built about 1888. It is situated in the western part of town, within
extensive grounds that also inclose a clubhouse and a dozen cottages. A
few years ago a large and very complete bathhouse, with modern apparatus
for the therapeutic use of water, was built adjoining the hotel. These
baths are supplied by a flowing artesian well 10 inches in diameter at
the top and 640 feet deep, that was put down behind the bathhouse and is
known as the Main Sulphur Spring. Its temperature is reported to be 105°
and its yield to be 2,500,000 gallons a day (1,736+ gallons a minute),
but this amount seems excessive. The city of Paso Robles has also
erected a bathhouse about one-fourth mile east of Hotel El Paso de
Robles. Its baths are supplied by a flowing well 427 feet deep, which
yields water at a temperature of 105°.

Paso Robles Mud Bath Springs
San Luis Obispo County, CA
About 2 1/2 miles north of Paso Robles there are natural warm springs
which are used for bathing. These are locally known as the Mud Bath
Springs. A large amount of warm water here issues about 100 yards from
the edge of Salinas River. The springs rise mainly within concrete walls
that were built as foundations for a bathhouse, but plans were changed
and the springs are now of secondary importance to Paso Robles Hot
Springs. There is a building at the Mud Bath Springs, however, below
whose floor there are about half a dozen cemented plunges, with
perforated bottoms that admit the water. About 30 yards west of the
bathhouse is a 4-inch flowing well that in 1908 yielded about 8 gallons
a minute of water 118° in temperature. The water is said to have been
struck at a depth of 140 feet. This is known as the Lithia Spring and is
used for drinking, its water being faintly sulphureted and salty. Two
natural springs near by are also used for drinking. One of these, the
Soda Spring, is about 75 yards west of north from the bathhouse. When
visited it was inclosed by a concrete curb and was equipped with a hand
pump, but it discharged about 4 gallons a minute of warm water.  This
water has been carbonated and bottled for several years by the local
soda works. A cool iron spring issues in a ravine 175 yards northwest of
the bathhouse. Water from this spring was piped to a drinking faucet
near the bathhouse, and the overflow, about 1 gallon a minute, supplied
a cattle-watering trough in the ravine.  Southeast of the bathhouse at
least half a dozen warm pools and seepage springs are scattered for half
a mile or more along the river flat that borders the present channel.
Mud from one or two of these pools is used in the plunges at the
bathhouse, and two or three of the flowing springs are used locally for
bathing and for laundry.

Santa Ysabel Springs
San Luis Obispo County, CA
About 4 miles southeast of Paso Robles a large volume of warm
sulphureted water rises in a ravine on the eastern side of Salinas
Valley. In the late eighties a resort was started here, but the plans
were not carried out, and in 1908 there was only a small private
bathhouse at the springs. One main spring rises beneath the bathhouse
and discharges about 150 gallons a minute of water 94° in temperature.
At the northeast corner of the bathhouse another warm spring of slight
yield rises in a concrete basin. The water flows northward half a mile
to a storage reservoir or artificial lake, and is used for irrigation.
About a quarter of a mile farther up the ravine other sulphureted
springs issue, but they are of small flow and are unimportant.

Cameta Warm Spring
San Luis Obispo County
73°F / 23°C
Not hot enough to be interesting.
N 35.4 W 120.25
1915 note:  Cameta Warm Spring is about 30 miles southeast of Paso
Robles and near the road toward Bakersfield. It rises in a board-curbed
pool about 5 feet square, at the lower end of a tule patch in a creek
channel, and yields about 3 gallons a minute, of moderately sulphureted
water 74° in temperature. Its flow is conducted a short distance in a
pipe to another pool beneath a shed, where it is used by the residents
for bathing.  The water rises in a region of low gravelly hills and is
similar in its character and occurrence to Santa Ysabel Springs (San
Luis Obispo County), which are farther west.

Fetters Hot Springs / Eleda Hot Springs
Sonoma County, CA
1915 note:  During the summer of 1909 a bathing establishment which is
supplied by four drilled wells was erected about 200 yards east of the
Agua Caliente baths. A hotel was opened on the grounds and the place was
advertised in 1910 as Eleda Hot Springs, but it has since become known
as Fetters Hot Springs.

Warm Springs of State Home at Eldridge
Sonoma County, CA
Warm springs that seem to be similar in origin to the artesian
waters of the resorts just described issue at several points north of
Sonoma Valley. At the vegetable and dairy farm of the State Home
at Eldridge water 72° in temperature is obtained from a spring that
yields about 10 gallons a minute of water that is used in the dairy
and for irrigation. The water broke forth at this spring at the time
of the earthquake of April 18, 1906, and a flowing well 50 yards
northward ceased to flow.

Bassett Hot Spring
2.5 miles NE of Bieber, Lassen County, CA
41.145165, -121.113283
174°F / 79°C
1915 note:  About 2 1/2 miles north of east from Bieber, in Big Valley,
is a hot spring that has been improved and for a number of years has
been used for bathing, and as the place was formerly owned by a Mr.
Bassett, it is locally known as Bassett Hot Spring. The water rises with
a temperature of 173° from a fissure in tuffaceous sandstone that is
exposed in a small depression 6 or 8 feet below the normal valley level.
A pool about 20 by 40 yards across is formed here, and from it the water
flows into another somewhat smaller pool. It is further cooled before
reaching bathtubs in a building a few yards beyond, by flowing in open
wooden troughs. The total flow is approximately 175 gallons a minute.
The water is used for irrigating a vegetable garden near by, and boxes
of earth that contain tomato and other tender plants are kept on the low
tuffaceous ridge at the spring and are thus prevented from freezing.

Stonebreaker Hot Springs
Lassen County, CA
About 3 1/2 miles southeast of Bassett Hot Spring a number of hot pools
and springs rise near the southeast edge of Big Valley, in meadow land
that formerly belonged to a Mr. Stonebreaker.  Six pools and springs
were counted in a belt extending for 275 yards in a southerly direction,
and between 235 and 350 yards east of the southernmost of these are four
other hot pools. The highest temperature recorded was 165°, and the
total flow, which comes mainly from the hottest spring, is about 125
gallons a minute. In 1909 there was a small bathhouse at one spring; a
large warm pool was also occasionally used for bathing and a hot one was
employed for scalding hogs. The water has been used to some extent, half
a mile or more away, for garden irrigation.

Hot Springs in Little Hot Spring Calley
Modoc County, CA
About 16 miles in a direct line, or 27 miles by road, northwest of
Bieber hot water rises on the eastern side of Little Hot Spring Valley
at two points, about 60 yards apart, at the base of low basaltic
slopes. Much seepage water is added from a strip of marshland, and
the resulting stream discharges about 225 gallons a minute. In the
northern of the two springs a temperature of 127° was recorded. Its
water is used for laundry purposes. At the lower spring, where a
temperature of 170° was noted, a hotbed for vegetables has been
constructed.

Kellys Hot Spring
Modoc County, CA
Along the upper course of Pit River hot water rises at several places,
most notably at Kellys Hot Spring (PI. V, A, p. 50) 4 miles northwest of
Canby or 21 miles west of Alturas. A pool about. 12 yards in diameter is
here formed in a semicircular depression in the alluvium of the northern
side of the river valley. In the center of this pool water rises with
such force as to dome up about a foot high. It is said that the water
was formerly thrown to a height of 2 or 3 feet, but its action has been
subdued by throwing stones into the center of the pool. The water has
been locally considered to be several degrees above the boiling point,
but a temperature of 199 1/2° in the pool 6 feet from its edge, at a
place where the water was 1 foot deep, was the highest measured. Water
boils at 204° at the elevation of the pool (4,400 feet), and it is
probable that it rises with this temperature in the spring. The measured
discharge was 325 gallons a minute.  The water is used several hundred
yards away as a domestic supply and for irrigation. A small area near
the spring and between two outflow streams is used for growing tomatoes.

Hot Springs on Hot Creek
Modoc County, CA
About 8 miles north of east from Kellys Hot Spring a stream known as
Hot Creek is formed by numerous thermal springs that rise on the north
side of the valley that borders Pit River. A maximum temperature of 92°
was recorded here, at the side of a small house used as a laundry and
for bathing. The stream, which carries approximately 700 gallons a
minute, irrigates meadow land along its course of a mile to the river.
Half a mile northeast of the main group another spring, with a
temperature of 85° and a yield of about 8 gallons a minute, has been
used to irrigate a potato field.

Warm Spring in Warm Spring Valley
Modoc County, CA
About halfway between Kellys Hot Spring and the springs on Hot
Creek, a spring issues in Warm Spring Valley on gentle slopes that
border a northern extension of the valley along Pit River. The
temperature measured in this spring was 81°, and its flow was
approximately 275 gallons a minute. The water is employed for
domestic uses as well as for irrigation.

Warm Springs near Rattlesnake Creek
Modoc County, CA
Warm springs that are similar to those of Hot Creek and Warm
Spring Valley issue along the slopes that border Rattlesnake Creek,
about 7 miles above its junction with Pit River and 8 or 9 miles (by
road) northwest of Alturas. They form a small area of natural
meadow land but have not been developed so as to water it efficiently.

Warm Springs near Canyon Creek
Modoc County, CA
Near the head of Canyon Creek, south of the valley of Pit River, warm
springs that are similar in character to those already mentioned in this
region are used to irrigate a small amount of land on a ranch.

Klamath Hot Springs / Shovel Creek Mud Springs
Siskyou County, CA
1915 note:  Klamath Hot Springs form an isolated group near the
north-central edge of the State. The springs rise in meadow land that
bor- ders Klamath River near the mouth of Shovel Creek and were formerly
known as Shovel Creek Mud Springs. The property has been improved as a
resort for more than 20 years and is much visited for the fishing that
is afforded by the river, as well as for the benefit derived from the
baths. In 1909 the improvements included a two-story stone hotel and
four cottages, besides bathing facilities.
Five springs and tule-grown pools are formed by the rise of thermal
water in a meadow on the south side of the river, and two other small
springs issue near the northern bank of the stream. Three springs
on the southern side are those chiefly used. The hottest of these, 152°
in temperature, forms a small drinking spring near the river and about
175 yards from the hotel. There is a small bathhouse at another hot
spring near by, and the main bathhouse is 100 yards to the southwest,
at the border of a tule area. Hot-mud baths and also clear-water
baths are here furnished by water that rises in the marshy area.

Surprise Valley Hot Springs / Hot Springs on Bidwell Creek
67254 CA-299, Cedarville, Modoc County, CA
208°F / 98°C
41.532623, -120.078475
just south of the Oregon border, NE California.
1915 note:  In the western part of the United States there is a large
area from which no streams flow to the ocean and which is therefore
called the Great Basin. Many of the mountain ranges and intervening
valleys in this area have been formed by extensive faulting, a mode of
formation here so common that its result is known as “Basin Range”
structure. One of the minor divisions of the Great Basin along the
northeast border of California is Surprise Valley, whose formation s
ascribed by Kussell to faulting along both sides of the valley,
subsidiary faulting having produced its minor features. The hot springs
that rise in the valley are considered to furnish confirmatory evidence
of its fault origin.
The northernmost of the hot springs that are noteworthy are
found at the base of lava slopes on the west side of the canyon
of Bidwell Creek, about 1 mile north of Fort Bidwell. From five
vents within 6 or 8 yards of each other about 75 gallons of water a
minute is discharged, the highest recorded temperature being 108°.
In 1909 the water was conducted to a plunge in a small bathhouse
and was also used for irrigation and domestic supply.
http://www.surprisevalleyhotsprings.com/
Season: year-round
Cost: Included in the cost of accomodations, $127/day and up
Distance: 417 miles, 6 hrs 50 mins

Hot Springs (Menlo Baths)
Eagleville, Surprise Valley, Modoc County, CA
135°F / 57°C
N 41.266 W 120.08

Hot Springs (Surprise Valley)
208°F / 98°C
N 41.534 W 120.078
Hot Springs near Southwest Side of Upper Lake
Modoc County, CA
At points about 2 miles and 3 miles, respectively, north of Lake City,
hot water rises in meadowland that borders Upper Lake. The quantity of
flow and the temperature of the water are rather indefinitely known, as
the water rises in tule-grown areas. It has been used mainly for
irrigating the meadowland, but the supply could be developed and more
efficiently used by proper ditching.

Hot Springs on East Side of Surprise Valley
Modoc County, CA
Between Upper and Middle lakes, on the east side of Surprise Valley,
three small hot springs rise in a small depression on a gentle
greasewood-covered slope. The discharge from the springs is increased by
seepage from a marshy strip along the overflow, 75 or 100 yards beyond.
In 1909 the water was used for irrigating meadowland and a small
vegetable garden.

Hot Springs at East Border of Surprise Valley
Modoc County, CA
One mile west of the hot springs between Upper and Middle lakes near the
base of slopes that encroach on the valley, scalding water issues from
small vents within a space of 20 yards. Corrals and vats have been
constructed here and the water has been used in preparing sheep dip.

Hot Spring near East Side of Middle Lake
Modoc County, CA
Near the eastern side of Middle Lake is a hot spring that is said to
form a pool 25 feet in diameter and 6 feet deep. Its flow has been
estimated at more than 300 gallons a minute, and like the other
springs of the valley it forms a meadow area bordering the lake.

Hot Springs near West side of Lower Lake
Modoc County, CA
About 5 miles south of Eagleville hot water issues at half a dozen
or more places in the gravel of the valley side, in a depression similar
to the depressions in which other hot springs in Surprise Valley issue.
The water has no appreciable taste or odor. There was formerly a
small bathhouse at these springs, and later a dam was constructed
that made a swimming pool, but in 1909 the water was used only to
irrigate 30 or 40 acres of meadow and alfalfa.

Hot Springs near Southwest Side of Lower Lake
Modoc County, CA
Three miles south of the springs just described is another group of
hot springs that are said to irrigate about 160 acres of meadow. The
water at this place forms a pool and is considered to be somewhat
warmer than that of the springs a few miles northward. There are
also several small warm springs near the road between these two
groups of springs.

Warm Springs at South End of Surprise Valley
Modoc County, CA
A small amount of warm water rises in meadowland at the south
end of Surprise Valley. This water may rise along a fault zone, as
the principal springs of the valley are considered to rise, but it may
also be of alluvial artesian character.

Boyd Spring / Boyd Hot Spring
Modoc County, CA
67 degrees F
Not interesting.
Boyd Spring is marked on some maps as Boyd Hot Spring, but its
recorded temperature in 1909 was only 67°. The water has no
noticeable taste, and in several respects it seems to be a spring of
alluvial artesian origin rather than one whose existence is due to the
rock structure. It is mentioned with the hot springs of Surprise
Valley, however, because it is to some extent thermal and may have
a structural origin. It is situated near the eastern side of Upper Lake,
on a gentle greasewood-covered slope. A tule-grown pool has formed
here, about 15 by 25 yards in dimensions, in which there are many
small fish. The discharge flows westward in a sluggish stream of
perhaps 1,000 gallons a minute, though at the point where the stream
was measured the current was so slight that its volume could be only
roughly approximated. In 1909 it was used for irrigating meadow
half a mile or more to the northwest.

Shaffer Hot Springs
Lassen County, CA
In Honey Lake valley there are two large groups of hot springs— one, the
more interesting, near Hot Springs railroad station and the other near
Amedee. At the former locality, near the northeastern side of Honey
Lake, a belt of calcareous tufa extends from the base of steep slopes
that border the valley near the railroad station southwestward for
nearly half a mile. The continuity of the surface exposure of the
material is then broken, but the course of the deposit is marked for
two-thirds of a mile farther by prominent crags and knolls of the
material that rise in meadow and salt-grass land that extends to the
lake. One of these crags is shown in Plate VIII, A. Seepage springs rise
at several points along the middle part of this tufa belt, but the
springs of chief interest issue beyond its most lakeward outcrop.  They
are not known locally by a definite name, but as they were referred to
in 1882 by Russell as Shaffer Hot Springs, this name is here used.
The principal spring rises with vigorous ebullition in a pool about 10
yards in diameter and 1 or 2 feet deep. The water was formerly thrown up
to a height of 3 or 4 feet, but this action has been partially stopped
by stones that have been cast into the pool. A temperature several
degrees above boiling has been claimed for this spring, but 204°, near
the center of the pool, was the highest temperature recorded. This is
the same temperature at which water boiled in a bucket over a fire near
the spring and is practically the calculated boiling point for this
elevation (3,975 feet). A bathhouse that extended ovfer a part of the
pool was in 1909 used as a vapor bath.  In 1882 Russell estimated the
flow of this spring to be 100 cubic feet a minute (748 gallons a
minute), but in September, 1909, the average of three float measurements
indicated a discharge of only about 175 gallons a minute. It does not
seem probable that this great difference is due to error in measurement,
and it is believed to show that the flow has actually decreased,
possibly because of the partial choking of the vent with stones. Two
other hot springs that discharge about 65 and 10 gallons a minute,
respectively, and 6 or more hot pools that have no surface outflow, are
formed in the nearly level salt-grass area in a distance of about 125
yards southwest of the main spring.

Amedee Hot Springs
Lassen County, CA
203°F / 95°C
40.300680, -120.196023
The second group of hot springs in Honey Lake Yalley is about 5 miles
southeast of Shaffer Hot Springs, near Amedee depot (150 yards SW). The
land here is alluvial and slopes very gently westward toward Honey Lake.
Scalding water forms several groups of shallow pools, mainly at six
places in a belt about 600 yards long that trends nearly south- ward,
but one-third of a mileS. 30° W. (magnetic) from the southern- most of
these main groups another hot spring forms a pool in salt- grass land,
and hot water probably rises at other places still farther toward the
lake. Temperatures of 172° to 204° (practically the boil- ing point at
this elevation, 4,000 feet) were noted in the several springs, and the
total discharge of hot water as measured by the flow of six run-off
streams is about 700 gallons a minute.  In 1909 the springs had not been
improved to great extent, but there was a small bathhouse beside the
railroad, near one of the largest groups of springs. At the southernmost
of the main groups there was also an old bathhouse, and water from one
of the northern- most springs was used in preparing sheep dip. At the
Amedee Hotel a shallow well 80 yards east of the nearest springs
supplied water at a temperature of 134° for kitchen use.

Highrock Spring
Lassen County, CA
1915 note: A large thermal spring rises on the Highrock ranch, about 10
miles south of east from Amedee. Its water is used for domestic supply
and for irrigation, and the spring forms a convenient watering place on
the road between Honey Lake Valley and Reno, Nev. Measurements in 1909
showed its flow to be about 525 gallons a minute and its temperature
86°.  In 1882 Russell reported its temperature to be 100° (U. S. Geol.
Survey Mon. 11, p. 52), but it is doubtful whether such a marked
reduction in temperature has really taken place.  The water does not
have a. distinctive alkaline taste, but it is said to rust tinned-iron
vessels quickly.  The spring rises at the edge of Honey Lake Valley,
from basaltic lava that forms the hills to the east.

Kruger Spring / Indian Valley Hot Springs
106°F / 41°C
40.141319, -120.934893
Greenville, Plumas County, CA
1915 note:  At the upper end of Indian Valley in Plumas County, in
meadowland a mile east of Greenville, there is a thermal spring that has
been known as Kruger Spring since the late eighties. During the more
prosperous days of mining in this region it was extensively patronized
as a bathing place. Of late years, however, the bathhouse has not been
kept in repair and it has not been open to the public. In 1909 about 1
gallon a minute of water 94° in temperature flowed from a board-curbed
pool in the bathhouse. Both the temperature and the yield could probably
be increased by sinking a well casing into the spring. A few bubbles of
gas rise in thè pool, but the water has no distinctive taste or odor.

Marble Hot Wells
Plumas County, CA
1915 note: In Sierra Valley, in the southeastern part of Plumas County,
several flowing artesian wells discharge water of unusually high
temperature.  The most remarkable of these wells are on the Marble
ranch, at Kettle post office, where, in 1885 and 1888, two wells, 4
inches in diameter, were sunk about 100 yards apart to a depth of 350
feet. Each of these wells discharges about 175 gallons a minute of
scalding water, the recorded temperatures being 156° and 161°. A third
well, 150 yards west of the other two, was sunk to a depth of 450 feet,
at which depth the drill encountered “quartz,” possibly bedrock. The
well did not yield a large flow. In 1909 its discharge was about 1
gallon a minute, and the temperature of the water was 125°.  About 350
yards north of the northernmost well is a spring that formerly yielded
hot water, but its flow and temperature were reduced by a well, since
abandoned, that was sunk a short distance north of it. When this spring
was visited it formed a pool from which there was a flow of perhaps 3
gallons a minute. The highest temperature recorded in it was 87°.  Water
from the two principal wells is used for domestic supply and for
irrigation.  Baths have been provided and they are occasionally used for
relieving rheumatism, but when visited in 1909 no attempt had been made
to develop the property as a bathing resort. About 6 miles southeast of
the Marble wells is another hot well, but its flow is smaller and the
temperature of its water is lower.  Several other flowing wells that
yield warm water are situated along a belt that extends for several
miles southeastward.

Brockway Hot Springs / Carnelian Hot Sulfur Springs / Brockway Springs Resort
9200 Brockway Springs Drive, Kings Beach, Placer County, CA
131°F / 55°C
39.230725, -120.014978
Modern site appears to be solely a set of condominiums with no public
access.
1915 note:  The only noteworthy thermal springs in the basin of Lake
Tahoe are at the north end of the lake, near Stateline Point, at a
fishing and boating resort, known as Brockway, where in 1909 a hotel and
four cottages provided accommodations for 100 people. The springs rise
in the lake within a few feet of the shore, bubbling up from numerous
vents, principally at two localities. One of these localities is at the
boat pier, where one spring has been cemented so as to form a drinking
basin near the lake edge. A temperature of 137° was recorded in this
spring, and the discharge was about 3 gallons a minute. A plan had been
considered for making a warm swimming pool by constructing a concrete
wall around the springs in the lake at this place.  Water from another
group of springs, which is situated in the lake near its edge, about 150
yards northwestward, is pumped to a tank near by and used for bathing
and for laundry purposes.

Warm Springs near Bridgeport
Mono County, CA
About 1 1/2 miles south of Bridgeport are other hot springs that
have formed noteworthy deposits of lime carbonate. At this locality
there are about 20 pools, ranging in diameter from about 10 inches
to 10 yards, that are scattered for a distance of 350 yards along a
terrace that borders a small creek. Much gas, which is probably
carbon dioxide, rises; but the total visible flow of the springs is
only about 25 gallons a minute. Temperatures of 70° to 105° were
observed in the various pools. In addition to the present pools
there are a number of low mounds that are evidently extinct springs.
In 1908 the springs at this place were unused, and apparently had
not at any time been improved for bathing or other purposes.

Hot Springs near Bridgeport
Mono County, CA
A much more noteworthy group of hot springs, similar in character to
those just described, is found about 1 1/2 miles southeast from
Bridgeport, on hilly slopes of andesitic lava, 200 to 300 feet above the
valley. The locality of special interest is an area of gently sloping
ground, approximately 350 yards in diameter, that lies at the base of
steeper slopes and includes a number of prominent ridges of banded onyx
marble or travertine,1 5 to 15 feet high and of somewhat greater
thicknesses, that tend to radiate from a central point, as shown in
figure 3 (p. 134). Each of the better-developed ridges is cut
longitudinally by a vertical crevice, and the banding of the travertine,
which is stained various shades of red and yellow, is seen at several
places to be also vertical. On the outside of several of the ridges
dull-brown lime carbonate has formed but in nearly horizontal layers. It
has apparently been deposited where the water has flowed out over the
ridges.
At two points near these ridges small springs, with temperatures of 121°
and 148°, rise in pools about 3 and 10 feet in diameter.  Water from the
larger pool has been used to some extent for bath- ing in a small house
near by. A third spring issues from a longitudinal crevice in the top of
one of the ridges, which is shown in Plate IX, A. Its temperature is
also 148° and its flow is perhaps one gallon a minute.

Warm Springs between Bridgeport and Bodee
Mono County, CA
In the mountainous region between Bridgeport and Bodie thermal water
rises in Warm Spring Flat, but no information is at hand concerning
either its temperature or its discharge. The springs are thought to be
relatively small and unimportant, however, and they are probably used
only as watering places for range stock.  Another warm spring issues
near Mormon Creek, 1J miles southeast of Warm Spring Flat. It is worthy
of note that Fales Hot Springs (Mono 1), the hot springs near Bridgeport
(Mono 3), and the springs in Warm Spring Flat and on Mormon Creek lie in
a direct ine that, if extended southeastward, would pass 8 miles north
of the Mono Basin Warm Springs (Mono 8, p. 145).

Benton Hot Spring
55137 CA-120, Benton, Mono County, CA
134°F / 57°C
37.813098, -118.520955
http://historicbentonhotsprings.com/
https://bentonhotsprings.org/
Old House and Inn at Benton Hot Springs has seven rooms in the 1940s
hotel, two private historic houses with private hot tubs, and 10 private
tub sites for day and overnight use.  There are also tent camping and RV
sites.
1915 note:  About 300 yards northwest of the store and post office at
Benton, at the base of slopes that border an area of meadowland, is a
spring that forms a shallow pool approximately 10 feet in diameter in
which the water has an observed temperature of 135 degrees. (A
temperature of 138° was recorded in this spring in 1876 by the Wheeler
Survey (U. S. Geog.  Surveys W. 100th Mer., 1876, p. 196), where it is
stated that the temperature is considered to vary 5°. In the Eighth
Report of the California State Mining Bureau, 1888, pp. 356 and 357,
temperatures of 135.5° in 1870 and 134.6° in 1888 are recorded.) It has
furnished a supply of water for the town for domestic and irrigation
uses since the sixties, and in the early days it also furnished power
for a small stamp mill. Its discharge is approximately 400 gallons a
minute. The water as it rises effervesces with a gas that is probably
carbon dioxide.  A small amount of an efflorescent salt—probably Epsom
salt—forms near the margin of the pool.

Bertrand Ranch Springs
Benton, Mono County, CA
70°F / 21°C
Not hot enough to be interesting.
N 37.888 W 118.487

Warm Spring in Saline Valley
Inyo County, CA
There are a few thermal springs of minor importance in the desert region
of eastern California. One of these springs is at the northeast side of
Saline Valley, about 25 miles in a direct line east of Independence. It
yields a small flow, and its water is not of high temperature.  There
are several cool springs a short distance westward from it and also to
the southeast that form watering places in this part of the desert.

Warm Spring in Panamint Valley
Inyo County, CA
About 4 miles north of Ballarat, on the eastern edge of Panamint
Valley, is a spring similar to the one in Saline Valley. Its water is
tepid and is noticeably sulphureted, and its yield is only about 40
barrels a day (1 gallon a minute). It forms a small watering place
on a road leading northward from Ballarat.

Hot Springs near Tecopa
Inyo County, CA
About 2 miles north of Tecopa railroad station two hot springs
issue on alkaline slopes that border the eastern side of an alkaline
marsh along Amargosa River. The springs rise in pits that have been dug
about 10 yards apart, and their combined flow is about 225 gallons a
minute. The observed temperatures were 108° and 109°.
Near the springs are heavy alkaline deposits of soda and common
salt, and the water tastes noticeably, though not disagreeably, of the
alkalies. In 1908 the water was piped to a railroad watering tank half a
mile westward. It has also been used to some extent for bathing at a
pool near the springs.
The water issues at the southwest base of a steep hill of quartzite
that dips about 15° NE.

Saratoga Springs
San Bernardino County, CA
Saratoga Springs, situated at the eastern border of south Death
Valley, at the base of the Black Mountains, have long been known to
desert travelers, but they are hidden from view at a distance by a
narrow rocky spur on the south and by sand dunes on the north and west.
As there is plenty of water at the place and a considerable area
overgrown with marsh grass, prospectors usually stop here for a few days
to allow their animals to rest after excursions into the surrounding
mountains, and in 1908 a stone cabin and other buildings were being
erected by parties who had mining claims in the mountains near by.
The principal spring forms a pool about 25 by 35 feet in diameter
and 3 feet deep, in whose sandy bottom the water can be seen rising
at a dozen or more places. The temperature of the water is about 82°,
and the pool is inhabited by many small fish, which have been identified
by Prof. J. O. Snyder as Cyprinodonmacularius, the species that live in
other desert springs of similar character. At three other points along
the base of the hills, 100 to 250 yards northeastward from the main
spring, water has been obtained by excavating into the slopes. An area
of marsh grass, tules, and open water extends 600 yards northward from
the springs, but on account of the great evaporation the area of open
water varies much with the season. The water tastes distinctly of
alkali, but it has formed no noticeable alkaline deposits.

Morgan Hot Spring
Mineral, south of Lassen Volcanic National Park, Tehama County, CA
NO PUBLIC ACCESS
40.385468, -121.512757
http://www.lassenhiking.org/Hydrothermal-Areas/Hydrothermal%20Areas.htm
1915 note:  In the neighborhood of Lassen Peak, in the northeastern part
of the State, there are some remarkable hot springs, whose positions
with respect to each other and the peak are shown on Plate XI1 (p. 140).
The best-known group is at the southern base of the mountain on the
Morgan ranch, where about 25 springs and pools are scattered for a
distance of 600 yards in a meadow along Mill Creek. Most of them are
quiet pools of small flow, less than 5 feet in diameter and relatively
shallow. A number of them contain thick algous growths, and several
deposit native sulphur. Others rise in areas where hard deposits of
siliceous and of calcareous materials have formed. Three or four springs
steam and sputter from vents on the banks of the creek. One of the
northernmost of these springs seems to have a true geyser action, for it
issues in a shallow basin 3 feet in diameter in which the water is said
to come to a state of vigorous ebullition and then to subside about once
a day. During a period of 41 hours the condition of this spring was
noted five times as follows: At the beginning of the period, in active
ebullition, discharge about 15 gallons a minute, temperature 200°+; two
hours later quiet, no overflow, temperature 187°; at 16 hours and at 25
hours later in active ebullition, overflowing; at 41 hours, quietly
overflowing, about 5 gallons a minute.
The place has been a camping resort for a number of years. In
1910 there were log bathhouses at three springs, a small shed over
another pool, and a vapor bathhouse over a vent at the creek edge.
Three-fourths of a mile northeastward, on a branch of Mill Creek, is
another hot spring over which a bathhouse containing several
compartments has been built. This spring also rises in a hard
conglomerate similar to that at the springs in the meadow.

Growler Hot Spring
NO PUBLIC ACCESS
Mineral, south of Lassen Volcanic National Park, Tehama County, CA
203°F / 95°C
40.394250, -121.508084
http://www.lassenhiking.org/Hydrothermal-Areas/Hydrothermal%20Areas.htm

Bumpass Hot Springs / Bumpass Hell
Shasta County, CA
40.457772, -121.501945
1915 note:  Bumpass Hot Springs (Pl. X, C) are situated on the side of
Lassen Peak, about .9 miles by trail northward from Morgan Hot Springs
(Tehama2,p. 138). They consist of numerous pools of hot water, some of
them in vigorous ebullition and rendered turbid by mud, and others less
active but turbid with sulphur in suspension. Some pools contain acid
or astringent water which is usually turbid with clay. The analysis
given on page 142, with analyses of water from Devils Kitchen and Morgan
Hot Springs, shows the composition of water from one of the principal
springs, which is noticeably acid and sulphureted.  The position of the
vents and the activity of the discharge change from time to time and
seem to be influenced to a large extent by the surface supply of water,
for the springs themselves yield a relatively small amount. In November,
1909, the stream running from them, which is a branch of Mill Creek,
carried perhaps 200 gallons a minute at a time when the adjacent slopes
were covered with snow. In the following July it carried perhaps half as
much, though melting patches of snow still covered parts of the near-by
slopes. On the earlier date there was a pond 20 yards across, at whose
edge was a large vent, from which muddy water was being thrown to a
height of 10 feet, but in the summer this pond was nearly drained and
the active spring had subsided to a sputtering pool.
The area covered by the springs and vents of Bumpass Hot
Springs — or Bumpass Hell, as it is locally called — is only about 200
yards long and 100 yards wide, but the rock for some distance
surrounding the active area has been altered to a white, siliceous
material by acid water and solfataric vapors. About 300 yards
downstream from the main area there is an area perhaps 50 yards in
diameter where also the rock has been greatly altered. When visited
vapor still escaped from numerous small vents, and needles of sulphur
crystallized at their orifices, but no water was flowing from them.
In 1910 the springs were occasionally visited as a natural curiosity,
but the mineralized waters were not used for bathing or for other
purposes. The Lassen Peak region is rapidly becoming a summer
vacation ground, however, both because of the excellent fishing in its
numerous streams and small lakes and because of its scenic features,
and Bumpass Hot Springs will probably become a favorite objective
point for outing parties from camps on the lower slopes. (See PL
XI.) As these springs are only 3 miles from the craters formed in
June, 1914, their character probably has also been changed.

Soupan Hot Springs
Shasta County, CA
Soupan Hot Springs are about 2 1/2 miles directly west of Bumpass
Hot Springs, on the western side of the main canyon of Mill Creek,
which is separated from the Bumpass springs by a divide only about
100 feet high. The springs yield a small amount of hot water similar
in character to that of the Bumpass springs but are of interest
chiefly because of the neighboring deposits of sulphur. These
deposits were at one time prospected and the pits are still locally
known as the “sulphur works,” but they were never worked on a
commercial scale and have long been abandoned.

Devils Kitchen (north)
Lassen Volcanic National Park, Plumas County, CA
40.440420, -121.432989
207°F / 97°C
1915 note:  At the head of Hot Spring Valley is an area called the Devils
Kitchen in which the lava has been extensively altered by solfataric
action in a way similar to that observed at the Bumpass and the
Soupan springs. The Kitchen differs somewhat in position from
these other hot springs, however, as it is in the bottom of the stream
canyon and is bordered by cliff-like walls. Numerous bubbling
and sputtering pools form “paint pots” and mud cones over the
bottom, which is about 200 yards across and is in many places floored
by a treacherous crust that overlies scalding mud. Steam issues
from many large vents around the border of the area, and in cool
weather the clouds of vapor make an interesting and unusual sight.
In 1910 the water from springs in Devils Kitchen had not been
made use of, but as the place is easily accessible from Hot Springs
Valley it was visited by camping parties as a place of scenic interest.

Tartarus Lake
Plumas County, CA
About 1 mile east of south from Drake Hot Springs (Plumas 4,
p. 142) lies a shallow, oval pond, approximately 175 yards long and 100
yards wide, that is known as Tartarus Lake. An overflow channel
leads northwestward from it, but in the summer of 1910 this channel
carried no water. A number of mud pools or “paint pots” on its northern
and northwestern border were in sluggish action, and at its southeastern
end were sputtering and steaming vents with temperatures of 170°.
Although the surface of the lake was apparently quiescent, the water was
turbid and slightly yellow in color, proba- bly from sulphur in
suspension. It was said that two years previous the lake was vigorously
bubbling throughout nearly its whole extent.  During the season of
greatest run-off the lake receives the drainage from the surrounding
slopes and then overflows, but it ordinarily contains only a small
amount of water. The water, like that of sev- eral other hot springs in
areas of solfataric action in the region, tastes astringent and probably
contains an unusually large amount of aluminum and sulphate.
The lake lies in a small depression surrounded by moderate slopes
beside a trail that leads from Willow Lake northwestward to Drake
Hot Springs.

The Geyser
Plumas County, CA
1915 note: In a ravine about 2 1/2 miles southeast of Tartarus Lake
there is an actively boiling pool locally known as The Geyser (PI. Y, C,
p. 50).  A main pool, about 25 feet in diameter, is situated at the base
of steep slopes, and in July, 1910, the water was continually thrown to
a height of 1 to 3 feet from a vent in its northern part. From the main
pool the water overflowed into another, somewhat smaller pool, in the
center of which there was a distinct upward current and from which the
overflow escaped down the ravine. In the center of a third pool or basin
about 10 yards south of the main pool there was also a distinct upward
current, and from this pool a stream of 2 or 3 gallons a minute
overflowed. Although the main spring was in very active ebullition, it
also discharged only 2 or 3 gallons a minute, and nearly all its water
apparently came from two hot springs in the bowlder-strewn drainage
channel on the slope 10 or 15 yards northwest of it.
It is said that during the 1870s the main spring cast water to a
height of 10 feet or more and was more truly geyser-like in action.
Residents in the region say that its energy has been gradually
diminishing and has noticeably decreased within the last few years.
Information is not at hand, however, regarding the influence of the
seasons on its action or the extent to which its vent has been choked by
rocks thrown into the pool.

Hot Springs on Mount Shasta
Siskiyou County, CA
1915 note:  Vapor and small amounts of hot water rise at two localities
near the summit of Mount Shasta. These localities are of relatively
little importance as hot springs, but their presence at such an
elevation and position is of geologic interest with respect to the
mountain, which is a volcano that has become extinct within
comparatively recent geologic time. The heat of the water, as at the
springs near Lassen Peak, is probably derived from heated lava within
the mountain.

Mono Basin Warm Springs
Mono County, CA
1915 note:  In 1881 Russell visited Mono Basin Warm Springs, which then
rose in Mono Lake a short distance from its eastern edge and were
occasionally used for bathing. Springs also rise from tufa domes in
the lake.

Casa Diablo Hot Springs and Geyser
Substation Rd, Mammoth Lakes,  Mono County, CA
REPURPOSED
199°F / 93°C
N 37.648 W 118.914
http://studentreader.com/long-valley-caldera/
Casa Diablo Geothermal Field is now used to power a geothermal plant,
but once included a geyser that was a tourist stop.
1915 note:  In the southwestern part of Mono County, near the base of
the Sierra, hot water rises at several localities. The principal group,
known as Casa Diablo Hot Springs (PI. X, B, p. 140), is situated on lava
slopes bordering Hot Creek, about 200 feet above open meadow land and at
the base of steeper slopes of lava. One main spring here forms a pool
about 15 feet in diameter, in which the water is in violent ebullition
and is thrown to a height of 12 to 18 inches. The discharge is only
about 15 gallons a minute, however, so the vigorous action is probably
due largely to steam or other gas. Near the edge of the pool a
temperature of 194° was recorded, which is only about 4° below the
boiling point at this elevation (about 7,350 feet), and the water is
probably at the boiling point in the center of the pool. The water is
rendered very turbid by pink clay. Small amounts of vapor rise in half a
dozen small pits that have been dug a few yards south of this pool. At a
distance of 60 to 100 yards north of the main pool there are a dozen or
more pools 2 or 3 feet in diameter in which observed temperatures range
from 115° to 187°. They discharge from one-half gallon to 5 gallons a
minute each, and the water forms a small marshy area, at the edge of
which a small bathhouse has been erected. A log cabin has stood near by
for a number of years, for the springs have long been visited by white
people as well as by the Indians for relief in rheumatic and kindred
troubles. Other small hot vents about 50 to-75 yards northeast of the
bathhouse supply a shallow pool that discharges perhaps 5 gallons a
minute. A quarter of a mile northeast of these springs there is still
another group which supplies a pool measuring about 20 by 60 yards that
discharges 15 gallons of scalding water a minute. In this pool the water
rises mainly from a conical basin. A small pit in the bank near its
margin forms a “paint pot” in which pink mud is kept in motion by
bubbles of steam or other gas. In this material a temperature of 198°
(probably the boiling point) was recorded.

Casa Diablo Hot Pool
1785 Hot Creek Hatchery Road, Mammoth Lakes, Mono County, CA
165°F / 74°C
N 37.647 W 118.859
1785 Hot Creek Hatchery Rd, Mammoth Lakes CA
1915 note:  About 3§ miles east of Casa Diablo Hot Springs there is a
shallow pool, measuring about 30 by 35 yards, which may be called Casa
Diablo Hot Pool. In November, 1908, this pool was not overflowing,
though there was a small, well-defined outlet channel from it toward Hot
Creek. Over nearly its entire bottom were numerous vents in which water
bubbled and in several of which, near the margin, temperatures of 120°
to 180° were recorded.

Chance Spring
73 degrees F
Not hot enough to be interesting.
Three Flags Hwy, Mammoth Lakes, Mono County, CA

Hot Spring Northeast of Casa Diablo Hot Springs
Mono County, CA
About 5 miles northeast of Casa Diablo Hot Springs there is a
pool, apparently of considerable depth, in which the water has a
scalding temperature and is mildly sulphureted. It is not so active
as the more southern springs, though it is similar to them in character.

Hot Spring south of Bishop
Inyo County, CA
At the base of the Sierra about 8 miles south of Bishop a spring
of considerable flow that is utilized for domestic supply and also for
dipping sheep has a temperature of about 130°. Like the springs
farther north, in Long Valley, its water has no distinctive taste nor
odor and is probably mineralized in only small amount.

Coso Hot Springs / Warm Spring near Little Lake
Gill Station Coso Road, Coso Junction, South of Mammoth Lakes, Inyo County, CA
207°F / 97°C
36.046033, -117.770436
https://www.ocf.berkeley.edu/~fricke/hotspring/
A small amount of lukewarm, odorless water issues in a spring
about 300 yards from Little Lake and near the base of a lava bluff
25 or 30 feet high.
Near the southwest corner of Inyo County there is a group of hot springs
that are especially remarkable because of the acid character of their
water. They have long been known as Coso Hot Springs, as they are on the
eastern slope of the Coso range of mountains. The main group is about 12
miles east of Haiwee railroad station, and is beside a road that leads
eastward to Coso and other mining camps.  The rocks of the region are
largely granitic, but this material is covered in some places by lava
and by lava craters of a recent geologic period of eruption.
At the principal spring, which is in granitic material, in a pit about
50 by 100 feet in diameter and 10 feet deep, vapor and hot, sour water
rise through a white mud that is apparently formed by the decomposition
from the rock. In summer the water in this pit is low, but in winter, as
a result of increased condensation and decreased evaporation due to
cooler weather, it is nearly half full.
The place has become a camping; resort for people afflicted with
rheumatism, which is said to be relieved by baths in the hot mud.
Bathing pits are dug in the cooler mud near the spring and the material
is worked up to the desired consistency. Close to the main spring is an
area of steam vents, about 25 by 50 yards across, which contains several
pools that furnish clear water for washing and cooking. This area also
furnishes sufficient heat for cooking, kettles containing food being
placed in shallow pits, covered with sacks, and allowed to remain until
the food is done.
Another area of hot vapors and mud in a ravine northwest of the
main spring has been filed on as a placer claim for mining medicinal
mud. The material at this place is somewhat finer in texture than
is is at the main spring.

Devils Kitchen (south)
Inyo County, CA
207°F / 97°C
N 36.036 W 117.802
http://www.volcanodiscovery.com/coso.html
Part of the Coso Hot Springs complex resulting from the Coso
stratovolcano, about a mile west of the hot springs.

Vallecitos Spring
1/2 mile soutn of 33562 Great Southern Overland Stage Route of 1849, Julian, San Diego County, CA
79°F / 26°C
Not hot enough to be interesting.
http://studentreader.com/southland-california-hot-springs/
N 32.97 W 116.423

Bainter Spring
1.5 mile west of Trona Wildrose Road, Valley Wells, San Bernardino County, CA
35.842614, -117.383588
92°F / 33°C

Bare Ranch Spring
Surprise Valley Road, Eagelville, Lassen County, CA
90°F / 32°C
N 41.167 W 120.032
Seems to be on the east fork of Bare Creek, somewhere north of
Surprise Valley Road.


Boiling Springs Lake
Lassen Volcanic National Park, Plumas County, CA
NO SOAKING
40.435862, -121.396532
190°F / 88°C
This refers to temperature of the boiling springs entering the lake.
The lake itself is merely quite warm.
Park Service now forbids bathing in the lake or pools.  Also, there is
danger of scalding.

Boron Spring
2000 Cravens Lane, Carpinteria, Santa Barbara County, CA
N 34.423 W 119.538
72°F / 22°C
Not hot enough to be interesting.

Conyon Spring
Just north of Summit Road, midway between CA-111 on the east side of
Salton Sea and I-10, Imperial County, CA
97°F / 36°C
N 33.545 W 115.654
This might be the same as Gucci Spring, which I find on mapping services
at 33.546699, -115.680608.


Carneros Spring
~5 miles west of Missouri Triangle, Kern County, CA
90°F / 32°C
35.438519, -119.847330

Chappo Spring
Inyo County, CA
80°F / 27°C
Not hot enough to be interesting
35.947639, -116.190161

Corn Spring
Riverside County, CA
72°F / 22°C
Not hot enough to be interesting
33.626135, -115.325515

Davis Soda Spring
Clearlake, Lake County, CA
73°F / 23°C
Not hot enough to be interesting
N 38.995 W 122.642

Cahuilla Warm Spring
Cahuilla Indian Reservation, Temecula, Riverside County, CA
CLOSED TO PUBLIC ACCESS
98 degrees F
http://www.soakersforum.com/3/viewtopic.php?f=5&t=1965
2011 report says that the tribe has ended public access.
A beautiful pond formed from a warm spring on the Cahuilla Indian
Reservation, in eastern Riverside County. Cahuilla Warm Spring consists
of a small pond surrounded by green vegetation immediately adjacent to
Cahuilla Creek Casino casino and right off CA-371. The ruins of a small
swimming pool still exist, indicating that these springs at one time
provided bathing opportunities

El Encino Springs
Los Encinos State Historic Park, 16756 Moorpark St, Encino, CA
79°F / 26°C
Not hot enough to be interesting
34.159862, -118.499170

Essex Springs
Just north of CA-299, between Canby and Alturas, Modoc County CA
91°F / 33°C
41.491920, -120.699989

Fish Springs
Desert Shores, W. side of Salton Sea, Imperial County, CA
90°F / 32°C
33.407502, -116.036341

Fort Bidwell Hot Spring
Fort Bidwell Indian Reservation, northern Surprise Valley, Modoc County CA
113°F / 45°C
41.861550, -120.158697

Fumarole
203°F / 95°C
N 36.031 W 117.833

Grapevine Springs
Death Valley National Park, Inyo County CA
100°F / 38°C
37.026088, -117.383976
http://www.americansouthwest.net/california/death_valley/north.html

High Rock Spring
High Rock Road, Stacy, Lassen County CA
86°F / 30°C
N 40.245 W 120.007
http://www.tipurdy.org/high-rock-springs/

Hot Spring
Just south of Wendel Road, Wendel, Lassen County CA
204°F / 96°C
N 40.364 W 120.243

Wendel Hot Springs
Just south of Antola Road, Wendel, Lassen County, CA
REPURPOSED
205°F / 96°C
40.355139, -120.256592
Seems to have been turned into geothermal power plant Wineagle Power
Project, designed by Barber-Nichols Engineering Co. and operated by
Wineagle Developers.


Hot Spring
Kernville, Tulare County, CA
113°F / 45°C
35.728568, -118.408654
1/2 mile east of Kern Valley Airport, 2 miles SE of Kernville


Keane Wonder Spring
Death Valley National Park, Inyo County, CA
CLOSED TEMPORARILY
93°F / 34°C
36.675843, -116.926744
36.673933, -116.928107
Closed for safety reasons:
http://www.nps.gov/deva/learn/historyculture/keane-wonder-mine.htm

Kellog Hot Springs
Susanville Road, Leonard, Lassen County, CA
172°F / 78°C
41.126000, -121.025135

Leonard's Hot Spring
Cedarville, Surprise Valley Modoc County, CA
CLOSED PRIVATE PROPERTY
41.598166, -120.092951
120° - 144° F
An old deteriorated resort that is on private property and a couple
pools that are too hot to soak. Dug-out ditch.  Northeastern California
in the Surprise Valley.  Directly off of a dirt road that may be too
muddy when wet.
A series of ponds created by the damming of a creek of hot spring water
in an isolated area. The remains of a hot springs resort, complete with
empty swimming pool and collapsed buildings, can be seen adjacent to
some of the ponds. The largest pond near the hot spring source is your
best bet for a bath, at about 110 degrees F. The pond is about 3 by 5
feet, and 3 feet deep. Be careful before getting in, since the water
temperature has a tendency to change. This is a nice spot in a scenic
valley in an under-populated portion of northern California. On a
weekday you can generally expect to have this spot to yourself. It gets
a few visitors on weekends, however. Do keep in mind that you are not
totally out in the middle of nowhere, and only a few miles from a town.
Primitive, except for the damming of the creek and the remains of the
resort.

Applegate Hot Springs
Cedarville, Surprise Valley, Modoc County, CA
41.614319, -120.105798
106° - 110° F
An extremely hot spring on a hill creating a little hot creek that is
surrounded by cow patties. Applegate Hot Springs does not offer a
soaking opportunity but has a lot of potential.  The hot spring emerges
at the top of a little hill on the northeastern side of Surprise Valley
with a BLM parking area.  There is a little sign at the source marking
the site as a stop on the Applegate Trail, part of the California Trail.
The source water temperature is about 185 degrees F and forms a small
hot creek that flows down the hill.  Some pools have been dug out where
the water temperature is cooled off, but still too hot to soak at about
120 degrees F.  The entire area seems to be dominated by cattle with cow
patties all around the hot creek making it too disgusting to soak in,
even for us.  Applegate could be a wonderful place if the source was
protected from cattle and piped to some pools down the hill that is also
protected from cattle, but without these improvements it's just a cool
geothermal site to see.

Glenn's Hot Spring / Seyferth Hot Spring
Cedarville, Surprise Valley, Modoc County, CA
41.601097, -120.085899
185 degrees F at the source, avg. pond temp 120 degrees F
A second series of ponds created by damming up of a creek of hot spring
water near Leonard's Hot Spring.  Primitive except for the damming up of
the creek.


Eagleville Hot Spring
Cedarville, Surprive Valley, Modoc County, CA
130 degrees F at the source, ~110 in the pond, ~105 in the hot tub
Hot water emerging from the side of the hill is channelised into a small
pond and a large redwood tub.  Primitive, except for the piping of the
Starting in Cedarville, go south on Surprise Valley Road 15 miles to
Eagleville, then 7.5 miles south to a large turnout on the left.  This
turnout is immediately south of the 5.5 mile marker.  Park here and walk
the short but steep trail (less than 50 yards) to the spring.  Property
owner has posted signs saying access as at owner's discretion; heed all
signs.

Wild Mint Hot Springs
Cedarville, Surprive Valley, Modoc County, CA
CLOSED PRIVATE PROPERTY
A short distance south of Eaglevillr Hot Spring, but not open to the
public at this time, last we heard.

West Valley Warm Springs
90 degrees F at the source, lukewarm in the small ponds
Primitive except for two small rock ponds.  ~25 miles from Alturas.
West Valley Reservoir and Blue Lake are nearby.  The small community of
Likely is nearby.