Fishing Report - August 8, 2025

Upper Henrys Fork 

Flows from Island Park Reservoir have dropped to around 850 CFS. The water is a slightly off color due to sediment in the reservoir above. The best fishing is with nymphs and streamers Wading anglers are doing well dead-drifting streamers through Box Canyon. The best fishing is in the morning and evening. For Streamers, try a Tungsten Olive Woolhead sculpin #4 or an Copper Zonker #4. For your nymph rig, try #16 red tungsten zebra midge and #16 Coppertop Duracell. In the Ranch section, the dry fly game is as technical as ever—timing is everything. Look for rising fish early and late, and be ready with beetles, honey ants, and hoppers for when the window opens. 

 

Lower Henrys Fork 

There are a lot of hoppers on the lower. The water temperature gets pretty warm in the mid afternoon, so try to get out there are early as possible. I love the rio juicy hopper in all it’s colors. There is a lot of moss in the river, but in the deep holes, it never hurts to drag a streamer around and you can’t go wrong with any of the sparkle minnow patterns. There has also been some decent trico spinner falls in the FunFarm and Chester backwaters. It can be a really fun way to spend a few hours in the morning. Try the #20 trico organza spinners or a #18 renegade.

 

South Fork of the Snake 

Hopper season is in full swing, and pink or golden water walkers have been productive. PMDs are popping in the riffles on certain days and can offer great dry fly opportunities. If fish aren’t looking up, don’t hesitate to go deep—nymphing continues to produce solid numbers throughout the day. The best fishing is in the morning hours and the earlier you are on the water, the better you will do. 

 

Madison River 

Dry fly fishing has been hit or miss, but it’s worth getting out early with hoppers, caddis, or chubbies before the sun climbs. Nymphing remains your most consistent option, with rubberlegs and beadheads catching fish from the banks to the center pockets. Streamer fishing has picked up in the evenings—focus on shaded banks and deeper runs for your best shot at aggressive takes. 

 

Teton River

The upper Teton is offering solid dry fly fishing when the wind stays down. PMDs, golden stones, and hoppers are all in play, especially mid-morning. The lower river is low and heating up, but early risers can still find fish willing to eat hoppers. Drop a nymph two feet below your dry to increase your chances in slower water. Hit it early and be off before the heat shuts things down. 

 

Yellowstone National Park 

Warm water closures still are in effect on the Madison, Firehole and Gibbon; however, the dry fly fishing has been outstanding on the Northeast side of the park. The Yellowstone, Lamar, Slough creek have been great! Stoneflies, mayflies, and caddis are all important right now, and terrestrials—especially hoppers, ants, and beetles—are getting consistent action. Focus on riffles and meadow stretches where fish are cruising for surface food. 

 

Lakes 

Hebgen Lake has been steady, with rising fish targeting Callibaetis, Tricos, and Damsels. When you don’t see much on top, switch to leeches or chironomids and work deeper. On Henrys Lake, trout have pushed into cooler water near inlets—Targhee, Hope, and Duck Creeks are your best bets. Fish slow and methodical with streamers or nymph rigs in these transition zones.