Snake River Fishing Report
Week of June 13, 2026 — June 21, 2026
Current Conditions
Teton Troutfitters guides the South Park to Alpine reach. Upriver conditions shown for reference.
The controlled release from Jackson Lake Dam is running stable with a flow of 4,510 CFS at Moran, though unmanaged inputs downstream at Moose bring the volume to 7,070 CFS. Water clarity immediately below the dam remains exceptional with over six feet of visibility, tapering down to three to four feet as Pacific Creek and the Buffalo Fork enter. Wadeability is good to restricted directly below the dam, but is poor and hazardous as flows approach Moose. Staging cutthroat trout are actively holding in slower seams, back eddies, and soft water behind mid-river boulders to feed on consistent midday hatches. Conditions heavily favor floating, though technical wading remains viable near the dam.
Flows are holding at 7,070 CFS and slowly falling, with water clarity averaging a fair two to three feet of visibility as Flat Creek and the Gros Ventre River contribute minor sediment. Wadeability is poor and highly dangerous due to heavy volume, swift current, and shifting gravel in the braided channels. Drift-boat anglers must focus their presentations on slow braided seams, grassy cut banks, and the calm water behind logjams where cutthroats seek refuge from the main current. Conditions strongly favor floating; wading should be entirely avoided due to safety concerns.
This lower reach is running high, surging past 8,630 to 10,000+ CFS as the Hoback River and other low-elevation tributaries contribute turbid snowmelt. Water clarity is muddy and off-color, dropping below one foot of visibility. Wadeability is completely unfishable and extremely dangerous. The fishing character is dominated by fast, powerful water, restricting viable tactics to stripping large, dark sculpin streamers or bouncing heavy stonefly nymphs along the extreme inside edges and slow bank eddies where large trout seek shelter. This section is currently blown out and unfished for normal guide trips.
What's Hatching
Blue-Wing Olives (Baetis)
Heavy10:00 AM – 2:00 PM
Triggered by cool water temperatures (42°F–48°F) and low-light or overcast conditions. Saturday and Sunday's stormy overcast weather will trigger dense, synchronized hatches in slow tailwater seams.
Midges (Chironomidae)
Heavy9:00 AM – 11:00 AM & Late Afternoon
Peak emergence is triggered by stable morning water temperatures (38°F–42°F) and consistent spring photoperiods. Cutthroats key heavily on pupae along slow eddies and foam lines.
Caddis (Grannoms)
Moderate2:00 PM – Dusk
Driven by late-afternoon water temperatures warming above 48°F–50°F and expanding daylight. Active egg-laying and flutter on warmer mid-week afternoons.
Salmonfly (Giant Stonefly)
SporadicSubsurface Only (All Day)
Subsurface nymphs are actively migrating in huge numbers toward rocky shoreline structure, preparing for the late June adult crawl as water temps approach 50°F–54°F.
Skwalla Stoneflies
LightMidday
Quickly wrapping up for the season as water temperatures rise, though a few stragglers remain on warmer days.
What's Producing
Dry Flies
The go-to dry fly for overcast BWO emergences. Present on a long, fine leader (5X–6X) in slow seams.
Ideal for late-afternoon and evening caddis activity. Fish in the surface film along slow banks.
Highly buoyant stonefly attractor. Great for prospecting banks or rigging a dry-indicator setup.
Nymphs & Droppers
A heavy stonefly nymph that serves as an excellent anchor. Bounce along the bottom in deep runs and off-color water downstream.
Sinks fast to target trout in deep slots. Highly productive as a searching pattern.
Highly realistic early stonefly nymph. Dead-drift through deep, broken riffles as Salmonflies migrate.
Essential mayfly imitation. Best fished on a tight-line or Euro-style rig in the clear upper tailwater.
Dominant midge pupa pattern. Sinks quickly. Dead-drift in back eddies and slow tailouts where midges naturally concentrate.
Streamers
Highly effective for off-color water on lower reaches. Swing and strip aggressively along grassy cut banks.
Large articulated attractor. Best used on high-volume, overcast afternoons to target aggressive brown trout.
Emergers
Deadly in the surface film on overcast days when trout are sipping just below the surface.
Slim, sparse, and highly effective nymph/emerger hybrid. Suited for the clear Dam-to-Moose section.
Features a slim profile and dark wing pad. Fish as a trailing dropper right before the afternoon hatch.
Best Time and Section This Week
Guide's Take
The guiding staff is experiencing a highly unique spring transition on the Snake River right now. Due to the warm snow drought compressing the season, the typical late-spring dry-fly window is condensed, meaning the clear-water tailwater of Reach 1 is providing some of the most technical and rewarding fishing of the year. The sheer density of the midday Blue-Winged Olive hatches on overcast days has been spectacular, with fine-spotted cutthroat trout rising eagerly in the slow, glassy eddies. While downstream reaches are rapidly succumbing to early snowmelt, focusing efforts on the pristine flows below Jackson Lake Dam offers anglers an exceptional opportunity to experience world-class dry-fly fishing before full runoff engulfs the entire valley.
Next Week's Outlook
Flows across downstream reaches are expected to enter a steady recession next week as the depleted high-elevation snowpack melts out completely. Anglers should expect early caddis and initial Salmonfly activity to intensify rapidly as water temperatures warm into the low 50s, creating an unseasonably early start to the summer dry-fly window. There is high booking urgency for visitors to lock in June guide trips now, as this historic post-runoff clearing is arriving weeks ahead of schedule and prime dates will fill rapidly.
Conservation Note
While water temperatures remain cold (41°F–49°F) and free from summer heat stress, native fine-spotted cutthroat trout are currently in their critical spring spawning window. Anglers must avoid wading on shallow, clean gravel beds in side channels to protect active spawning redds, fish only with barbless hooks, and wet hands before releasing fish quickly.
Common Questions This Week
Is the entire Snake River blown out right now, or are there float options available?
While the canyon and lower reaches below South Park are muddy with under a foot of visibility due to turbid tributary inflows, the upper river from Jackson Lake Dam to Moose remains highly fishable. The dam release is keeping the upper tailwater ice-clear with over six feet of visibility, offering exceptional drift-boat fishing. Anglers should focus entirely on this upper section, targeting slow seams and eddies where cutthroat are actively feeding on top.
When can we expect the famous Salmonfly hatch to start, and what should we fish in the meantime?
The historic warm snow drought has accelerated seasonal timing, putting the Salmonfly hatch approximately two weeks out, with adult emergence expected to begin in late June. Right now, massive numbers of subsurface nymphs are actively migrating toward rocky shorelines. Anglers should fish a heavy stonefly nymph like a size 6 Tan Tungsten Pat's Rubber Legs or a size 12 Olsen's Straggle Stone along soft bank edges to intercept these staging fish.
What is the most effective dry fly setup to target midday rising cutthroat trout?
The most consistent setup for midday rises is a double-dry or a dry-dropper rig. On overcast days, fish a size 18–22 Parachute BWO with a size 22 Barr's Flashback BWO Emerger trailing 18 inches behind on a long, fine 12-to-15-foot leader tapered to 5X or 6X tippet. In the exceptionally clear upper water, cutthroat have plenty of time to inspect your presentation, making a delicate, drag-free drift absolutely essential.
The river is dropping fast — with snowpack at just 19% of median, the post-runoff clearing is arriving weeks ahead of schedule. Salmonfly nymphs are staging, caddis are building daily, and the summer dry-fly window is opening early. Lock in your June and July dates before they're gone.
