Hoppers are out big time on the lower river, but the fish are after them mainly in the early hours then again during evening. They are also out big time on the Last Chance-Harriman and Flat Ranch sections river where tricos are on during morning hours with caddis during evening. As they fade about late AM, switch to hopper and other terrestrial insect patterns (use long drag-free floats). Fishing on the Flat Ranch section is slowing down as flow out of Henry’s Lake is dropping and warming. It’s still a good idea to have rusty spinners (#16-18) in that fly box anywhere you try the upper river.