The Upper Owens River Fly Fishing near Mammoth Lakes, CA has changed a bit since the Canadian cold sweep earlier this week. The river still flows at a late summer subtle level. Water clarity is as usual always fishable, and water temps remain within healthy levels. The Hoppers are still there but they struggle to get moving until the sun warms them at a later time depending on the day. Before that anxiously awaited moment we end up going down under the water with all sorts of attractor nymphs and streamers. The entire river holds fish, read the water to appropriate your time wisely and spend it in the fishiest looking holding water. As we feel the cooler mornings rolling in we look forward to the fish of the Fall that come up river.