I have to admit that my first thought in the few seconds of this video was, “What the fuck are you doing, you fool? Get away from the wash!”
Then I discovered the person filming the video is a USGS hydrologic technician, and I was like, “Oh, right. Carry on, then.” This is definitely one of those don’t-try-this-unless-you’re-a-paid-professional sort of things. Much like climbing down into the craters of active volcanoes FOR SCIENCE.
These floods are scary dangerous things. Too many people don’t appreciate the power of water. But just watch that video. Look at the sediment load that water’s carrying. Listen to the roar. Consider they could feel boulders bouncing in the flow, just standing there at a relatively safe distance on the bank. Note the size of the channel these occasional floods have carved. It’s not a good place to be standing when the water comes pouring in.
And it comes fast, and hard, and without much warning. Flash floods have appeared in the desert on clear, bright, sunny days when the nearest rain is a hundred miles away. The moment you hear a rumble and a roar, it’s time to get the hell to higher ground.
Unless, of course, you’re a scientist, in which case you know how to do crazy dangerous things relatively safely. In which case, carry on.