PMDs, Green Drakes and flavs are bringing fish up on the lower river. We have not heard much to date about gray drakes emerging in significant numbers. Flow out of Island Park Dam was raised to 1000 cfs last Friday. It has been stable since then meaning better conditions for good green drake activity, and we have had a few reports saying fishing success has improved around Last Chance as a result. The river in Harriman State Park opened to fishing yesterday. We have not heard much of success yet, but we will soon.
Flow out of Henry’s Lake, which lately features slow fishing, is up to 80 cfs. This means some reasonable fishing could be had in the Flat Ranch portion of the river. Green drakes, PMDs, and caddis activity will bring fish up. Much better fishing would have resulted had a flush of around a couple hundred cfs happened earlier this spring.