Lifts a creek

Argh!” Thalia pushed me, and a shock went through my body that blew me backward ten feet into the water. Some of the campers gasped. A couple of the Hunters stifled laughs.
“Sorry!” Thalia said, turning pale. “I didn’t mean to—”
Anger roared in my ears. A wave erupted from the creek, blasting into Thalia’s face and dousing her from head to toe.
I stood up. “Yeah,” I growled. “I didn’t mean to, either.”
Thalia was breathing heavily.
“Enough!” Chiron ordered.
But Thalia held out her spear. “You want some, Seaweed Brain?”
Somehow, it was okay when Annabeth called me that— at least, I’d gotten used to it—but hearing it from Thalia was not cool.
“Bring it on, Pinecone Face!”
I raised Riptide, but before I could even defend myself, Thalia yelled, and a blast of lightning came down from the sky, hit her spear like a lightning rod, and slammed into my chest.
I sat down hard. There was a burning smell; I had a feeling it was my clothes.
“Thalia!” Chiron said. “That is enough!”
I got to my feet and willed the entire creek to rise. It swirled up, hundreds of gallons of water in a massive icy funnel cloud.
“Percy!” Chiron pleaded.
I was about to hurl it at Thalia when I saw something in the woods. I lost my anger and my concentration all at once. The water splashed back into the creekbed. Thalia was so surprised she turned to see what I was looking at.

TTC ch.6