Found this info when searching another topic:
bassresource.com/fishing/hot_summer_fishing.html
"The reservoirs around here are used for hydroelectric power and irrigation, so in the summer they tend to draw a lot of water off the lakes quickly. This can work to the angler's advantage. As they draw water off they are creating a current in the lake. When this is happening I like to find the narrow parts of the lake which will concentrate the current. I pick out five or six points in these narrow areas and start making a 'milk run.' This is where the water is moving the best and you will soon come in contact with the fish when they turn on. And, when they turn on, they all turn on at once."
For this technique, Don Payne uses a small 4-inch PowerBait worm from Berkley on spinning gear. "I uses a split shot technique when the fish are less than 25 feet deep; if they are over 25 feet, I go to a baitcast reel and switch to a Carolina rig," Payne stated. "No matter how deep they are, I seldom will use anything heavier than a 1/2-ounce weight. Summer fish are finicky and will more readily accept small baits, but they will eat!"