Big stonefly event on the lower river is pretty much over. Just remember that several days afterwards fish will again look for the big bugs. That can be just in time for golden stoneflies to appear in big numbers.
It was a stormy holiday weekend in the Park, but we hear those folks that braved the weather had good fishing in the Firehole River. Bad weather this time of year always means good fishing on the Firehole. With cool weather continuing into this week, fishing should hold up. Look for action from caddisflies, early season BWOs and increasing PMDs. So be sure to have lifecycle patterns for these. Soft hackle patterns also produce, especially in tail-outs.
Are you looking for a small stream that is producing active fish? Try Warm River. Now that Memorial Day weekend has passed, crowds will decrease. Consider walking up the railroad grade from the Three Rivers area, or walk up from the campground. Fish are taking PMD and caddisfly life cycle patterns. Traditional dry fly patterns in smaller sizes will also produce in the faster water. Soft hackled patterns always work on this stream.Try them just below Warm River Spring as well as on the lower river.
Flow out of Palisades Dam was dropped from 13000 cfs to 10000 cfs yesterday. Streamer, big nymphs (Golden stone nymph patterns), and rubber leg patterns continue to produce best as larger fish are staying close to bottom where scoured food forms are drifting. Try midge pupa and your favorite BWO nymph patterns because river is beginning to warm. A few fish are taking BWO duns on the surface.
There was a boat accident near Conant that proved fatal this weekend. Please be careful not only when boating, but also while wading this powerful river.
Expect crowds at places like the State Park, County Boat Dock, near the hatchery, and along the cliffs. The lake has had a long time free of ice, but cool weather will help keep fish close to the shoreline. Try some of the standard patterns such as California leeches, olive or gold crystals, mohair leeches, peacock AH, mity mouse, all on an intermediate or slow sinking line.
Flow out of Palisades Dam was reduced to 12900 cfs early today. Water temp throughout the the river to Menan is in the mid forties in deg. F. Fishing remains good partly because all recent flow reductions have been relatively small and water temp is climbing. Try rubberlegs, golden stone nymph patterns, olive or chartreuse clousers, sculpzillas. For smaller patterns try BWO nymph and midge pupa patterns.
Big stoneflies are just now beginning to emerge and fly in Box Canyon. Later this weekend should be the best time to get into fish taking them there. From Riverside Campground down to Mesa Falls is a good bet to find fish taking the big bugs now, but be sure to have caddisfly life cycle patterns in that fly box. March brown dries still produce on the lower river.
Hatchery catchable rainbow trout will be released in the Harriman Fish Pond soon after June 20th.
The Firehole River will be in prime shape for the fishing season opening this Saturday (tomorrow). Expect fish to key on BWOs and various caddisflies.Yellowstone Lake, now free of ice, also opens to fishing on Saturday, and you must kill all lake trout caught. Lewis Lake is free of ice and opens to fishing Saturday. Presenting streamers while wading the shoreline (insulated waders will help you stay in the water!) will bring responses from resident brown trout. Go to the Park web site to view waters closed to fishing.
The Ashton-Flagg Road is open only to Calf Creek Hill. About two feet of snow remains on the road beyond that point. From the Wyoming side the road will not open until June 1st.
North shore of Hebgen Lake is fishing well for those presenting streamer and big woolly bugger patterns. Try big stonefly nymphs and rubber leg patterns below Hebgen Dam. Some rainbows remain in the South Fork of the Madison River estuary, and they will take any streamer pattern you present.
Beaverhead River is low, but fishing is good. Try cranefly larva patterns, streamers and woolly buggers in deeper waters.
Red Rock Creek in Red Rock Lakes Wildlife Management Area is closed to fishing through June 15th in order to allow grayling to spawn with minimal human interference.