Not to rain on your parade again,but the streams in delayed harvest do get a little warm,but after a couple of weeks after the delay harvest has ended,the streams will be basically void of trout through catch and keep practices anyways.Another problem in the heat of summer in larger streams is swimmers and tubers,god in some of them you'd think you're in a waterpark with slides and lazy rivers!Hence the reason i have started staying on lakes,ponds catching sunfish no a days,more room and plenty of panfish that rarely see a fly.