removing water storage systems like Dams eliminates deep water where fish can cool off ..Drought cause not only less water but shallow water that heats up and stays hot .Build some water catch basins like deep lakes ….Also stock some algae eating critters as temperatures rise algae blooms and fish Gills get infected and cant get oxygen..
Same problem in East Coast Chesapeake Bay where over fishing for what used to be called junk fish full of bones and oiley called Moss Bunkers or menhaden used for CAT FOOD …It turns out they were the CLEANERS of ALGAE ,it was their function in Nature in addition to serve as food for larger fish. Don’t fool with Mother Nature.Harvesting Menhaden caused the Bay to get polluted with Algae ..The excuse for not stopping Moss Bunker Harvesting was a company created 200 jobs for CAT FOOD…on the Bay by harvesting the ALGAE eating fish…Good for CATS who should have been eating Rats …at the expense of everything else….stupid is as Stupid does..