If you want to see a really great event on the Brazos, this is William Tedrick below the Whitney dam a few days ago. Tedrick is a down-to-earth sort of aw shucks guy who shares his fishing experiences with a pretty broad audience on YouTube.
Check out what happens beginning just under 7 minutes into the video. Here it comes!
Really hot days create a large demand for electricity and hydroelectric power is one way to provide it! Tedric was down there taking advantage of it!