Flat earth rebuttal

Questions are not 'points'.

"ball Earth"

Earth is not a ball, it's an irregular spheroid, and you should already know this because you actually included a topographical scan in one of your badly photoshopped images.

" the center of central south Louisiana"

You can't have both a 'central' and a 'south'. You said south Louisiana. Moving the goalposts fallacy.

"Louisiana is bulged"

We discussed this. South Louisiana is lowland protected by a manmade seawall, just like New Orleans is. It is not "bulged" and that is your own erroneous assertion.

Here's New Orleans on a map if you don't know where it is. It's in the South of Louisiana (also, be sure to factor in the Mississippi river):
https://en.wikipedia.org/wiki/File:USA_Louisiana_location_map.svg

"any rain south would flow down the curve to the Gulf"

You are somewhat correct (rain would flow down the uneven surface: as said earlier, earth is not smooth, you've even posted mountain images and should know this). These are called rivers. Small streams form a path of least resistance towards the lowest areas and typically merge into a river. In this case, it would be the Mississippi river. If you look on river diagrams or follow a small stream from source to river, you'll find it merges. Aquaducts are naturally occurring underground passageways (involving crevices, EG caves ot tunnels) where water can flow under the ground towards the nearest stream.

"But on this Earth the water can back up and rise and not flow away for days because it's lower (not curved) than lands farther out."

Somewhat incorrect, I sense a misperception. Water cannot go back up a hill (except via evaporation via solar heat into rain clouds which is where rain is from).

Water that doesn't go 'back up' ends up in the ocean or in a lake. Rivers naturally flow towards the lowest point, which is the ocean. Rivers can continue flowing because there is so much land (America is bigger than 50+ UKs) that rainfall is practically guaranteed to keep the aquaduct levels full (and in turn, the rivers).

Rivers don't instantly dissipate but would gradually get lower and lower if there was a drought. If you've ever seen a barren valley, water once flowed through there (which is how the valley forms).

" if Earth is a ball and at 3 miles out there is a 6' drop in curvature and at 20 miles out there is a 266' drop in curvature and so on, why does south Louisiana flood? The Gulf is not backing up right? "

Your maths is off. Curvature is consistent. If there was a 266 drop at 20 miles, it would be 13.3 drop per mile, and not a 6 drop per 3 miles. 20 miles out would see a curve of 40', not 266'.

The earth has a diameter (on it's equator) of approximately 3,967 miles. One mile is equal to 5280 feet. So the curvature is really small (due to earth's large size). The water doesn't 'spill over' because it's all being pulled to centre of mass, so it's equally distributed amongst the lowest areas across the globe (the lowest area being where the ocean has settled which is why the ocean is so deep).

The same low areas depicted in your topographical image you had of the 'misshapen' earth from earlier.