Jackson Hole Fishing Report & Current River Conditions

Current Conditions

September 24, 2026

Overall Conditions

Prime late-September fishing has arrived! Dropping water temperatures and crisp, changing autumn weather have trout stacked up in key holding zones and feeding heavily across our regional rivers. Keep your fall dry-fly box handy and stay ready to adjust tactics as conditions shift throughout the day.

Snake River

Status:  Dam releases were pulled back to 1,600 CFS on September 23rd. Trout are adjusting quickly to the lower volume and are actively moving into their fall holding water—establishing predictable feeding lanes along main-river seams, drop-offs, and moderate-paced runs.

The Details: Expect Timpanoga Hecuba mayflies, Pseudocloeons (tiny BWOs), nocturnal stoneflies, and a steady mix of terrestrials.

Tactics: Early morning fishing has slowed down with cooler autumn air, so focus your efforts from mid-morning through the afternoon when water temperatures warm up and bug activity picks up. late morning nymphs below foam dry flies with small to medium patterns remains the most consistent producer, while surface action peaks in the afternoon. Parachute dries have been accounting for the larger fish in the afternoon.

Green River

Status: Keep a close eye on the gauges, as fall flows have been fluctuating. Any small bump in water levels has triggered an immediate increase in angler success.

The Details:  Stoneflies and grasshoppers are still around, with small mayflies starting to become more prevalent.

Tactics: Focus your efforts with large stoneflies and hoppers, adding a small dropper nymph mid am and transitioning to smaller dries as hatches present themselves. streamers have been seeing some decent success and should continue as fall weather and migrating fish move through the system.

Salt River

Status: Flows have slightly increased with a decrease in irrigation demand.

The Details: A mix of Mayflies are hatching and hoppers are still prevalent.

Tactics: Mid-sized parachutes will keep you on fish for most of the day, but pulling streamers offers the best chance at larger resident trout as well as early-run Browns moving up from Palisades Reservoir.

Flat Creek

Status: Technical, but highly rewarding fishing.

The Details: Decreasing fishing pressure and increasing hatches make this a great time of year.

Tactics: Pinpoint accuracy with downsized spinners continue to yield results, but make no mistake—these late-season trout have seen it all. Success now hinges entirely on your approach and presentation. Long Leaders (12 feet ) to 6x have been increasing the odds.

Lewis Lake

Status: Fish are moving back into the Shallows

The Details:As water temperatures drop, both Brown and Lake trout are moving into shallower water to feed heavily before their fall spawn gets underway.

Tactics: Small baitfish patterns on intermediate or sinking lines fished slow on flats and drop-offs.

Guide Tip for the Week

Crisp autumn mornings mean lower water temperatures and sluggish trout early in the day. Resist the urge to hit the water at first light. Instead, stay flexible with your schedule and plan your trip around the mid-morning through late-afternoon window. As the sun hits the river, water temps rise just a few degrees—triggering the hatch, getting fish moving, and compressing your best fishing into a high-yield activity window.

Live Flow Data

National Weather Service feed for the Jackson area