Scenery around Hoover Dam has water moving up the sides of the land

Sorry to be off topic too, what plane are you using to fly under bridge? You are out of Dev mode with true to life setting?
I just tested different planes under the Golden Gate Bridge: the best I could do was with Savage Carbon cub, it didn’t crash but I hit some sort of invisible wall which stops the propeller and kills the engine. I couldn’t glide far enough for a safe landing and ended crashing in cold water.