Fishing Report - July 25, 2025

Upper Henrys Fork: 

Flows coming out of Island Park Reservoir have dropped to approximately 1040 CFS. We’re still seeing a few Golden Stones fluttering about the Box Canyon as well as Hoppers, Caddis, and Mayflies. The tried and true dry-dropper is always a good place to start. Tie on a big foam dry such as a Purple Chubby Chernobyl or Juicy Hopper Tan and drop a bead headed nymph 12-15 inches below. You could use a variety of colors and kinds with this set up. The Harriman Ranch has been tough recently, but if you take your time and really study the water watching for risers you might get lucky. Your best chances will be during the most pleasant times of the day – think earlier in the morning and later in the evening. You might see a variety of Mayfly spinners such as Flavs, PMDs, and Callibaetis. Caddis have been out heavily in the evenings and as the dry weather persists we will see more terrestrials. Make sure you have some Splitsville Rusty Spinners, Spent Partridge Caddis, and Quick Sight Beetles in your box. 

 

Lower Henrys Fork:

Flows near Ashton are currently 1770 CFS and things have really slowed down on this stretch of the river. Water temps are rising and it’s best to give the fish a rest during peak heat. If you find yourself out there when it’s cool enough, try a hopper or beetle pattern such as the Lawsons Henrys Fork Hopper or the Hi-Vis Foam Beetle. Nymphing can also be productive with a Pat’s Rubber Legs and bead head trailer like a Red Copper John. 

South Fork of the Snake: 

It’s been a busy and fun season on the South Fork! Salmonflies are slowing down, but you might still see a few on the upper sections. Beyond that we’re on to Goldens, Grasshoppers, and maybe a few PMDs. Hopper-droppers are the name of the game once again. Use a Sweetgrass Hopper or Water Walker Golden Stone and trail a Copper Top Duracell or bead head nymph of your choice. 

Madison River: 

The biggest hatches are behind us but the Madison is still fishing well. You can be successful with a variety of strategies including dry fly fishing, nymphing, and streamers. A Henrys Fork Foam Stone Golden and a Copper Top Duracell dropper is typically my go to. For streamers try a Lil Kim, Meat Whistle, or Sparkle Minnow. 

 

Teton River:

The Teton is extremely low right now, to the point where the Slide is not an option. Water temps are high and we recommended starting early and getting off the water early. Stick to the upper portions of the river around Driggs and try Golden Stones, Hoppers, and PMDs. 

Yellowstone National Park: 

The Firehole, Gibbon, Madison and all associated tributaries are closed in the park due to low flows and warm water temperatures. All other rivers remain open and are offering great dry fly fishing right now. Make sure your fly box is stocked with a variety of Stonefly, Caddis, and Mayfly patterns. There are lots of opportunities to throw terrestrials like Grasshoppers, Beetles, and Ants as well. 

Lakes: 

Hebgen Lake has been steady the past couple of weeks. You’ll likely find fish rising for Callibaetis, Tricos, and Damsels. If you don’t see much surface activity, try leeches and chironomids. On Henrys Lake the fish have moved out of the shallow water and are looking for cooler water near the inlets. Fish areas around Targhee, Hope, and Duck Creeks.