I have been guiding, back and forth from the Missouri River North of Helena MT, and Rock Creek East of Missoula MT. The Mo is producing big fish, like usual and lots of em and they are hot! They are eating, for me any way, caddis pupa and pmds. You can stick big fish all day on dries in the right spots if the weather cooperates. Rock Creek was also fishing great but we got some rain and it cooled off a little raising the river back up to 1700 cfs which pushes fish a little and keeps em tucked in behind stuff and not all over the river. They are still eating salmon flies/ golden stones. Green drakes and pmds are out if its cloudy. Lots of fish still crushing big bugs, eating a stone or mayfly nymph dropper. Be careful if you are floating and have some fun. Brooks Jessen MT Guide #9431 Montana Fly Fishing, Missoula Montana, Montana Fly Fishing for Trout. Classic Journey Outfitters.