depends on the type body of water, but generally, if a creek or river is prone to "boom and bust" cycles, then yes: swimming holes will be silted in at times, then blown out at others, and so forth. Where I'm at in CA, for instance, is a "chapparel" type of terrain. And any swim hole along creeks or river are no good. At least in-so-far as in the water type hunting. Granted beaches up higher that aren't affected, will be different. But in the path of water and wet-sand is always scr*wed up with torrential flows, subsding to totally dry seasonals.