Look at a river or stream at peak runoff, and you’ll wonder how trout survive in such a rushing torrent. Not only do they survive, they thrive until the deluge subsides. Trout don’t like spring runoff any more than you do, but it’s a fact of life—a rite of spring, if you will. Deal with it. A trout has to. The fish cope by moving or hunkering down. They’ll migrate and take up lies with less current, where they can expend less...