Disclaimer: The following report is compiled using artificial intelligence from current available data. Accuracy is not guarenteed. Always check local laws and regulations before fishing.

Green River Fishing Report - 2025-11-10

River Description

The Green River below Flaming Gorge Dam in Dutch John, Daggett County, Utah, is a premier tailwater fishery renowned for its abundant rainbow and brown trout populations. Spanning about 8 miles of accessible water through scenic desert canyons, it offers world-class fly fishing from A, B, and C sections. Current conditions show stable but below-average flows at 847 cfs near Greendale (36% below historical average), with a chilly water temperature of 47.8°F—ideal for holding fish in deeper pools but limiting surface activity. Mild weather with a high of 59°F and light SSE winds at 5 mph supports comfortable wading, while the waning gibbous moon (66% illumination) transitioning to last quarter on November 12 may slightly suppress nocturnal feeding, shifting focus to daytime patterns. Overall, this is a technical nymphing river with moderate flows favoring subsurface tactics, though emerging hatches could open dry fly windows in sunnier conditions; fishing potential is solid for selective trout in the 16-22 inch range.

3-Day Forecast

Weather trends indicate persistent mild autumn conditions with mostly sunny skies dominating the next three days, based on available NWS data for Monday (high 59°F, low 32°F). Expect highs stabilizing around 58-60°F and lows in the upper 20s to low 30s through Wednesday, with light winds (5-10 mph SSE) and low humidity (35-40%). Clearing skies will enhance angler visibility and boost dry fly opportunities as sunlight penetrates the water column, potentially triggering subtle midge or blue-winged olive hatches in calmer sections. However, cool overnight lows may slow morning hatches, keeping water temps steady near 48°F and favoring mid-morning to afternoon action. No precipitation is forecast, reducing runoff risks but emphasizing hydration in the arid environment. (Note: Detailed multi-day forecast data is limited; trends extrapolated from current patterns.)

Fishing Outlook

Fair to Good overall for fly fishing success. Stable flows at 847 cfs provide consistent drifts in riffles and runs, concentrating trout in predictable lies without the turbulence of higher water—ideal for precise presentations. Cool water temperatures (47.8°F) and moderate air highs limit aggressive surface feeding but enhance nymphing effectiveness, as fish conserve energy in deeper slots. The waning moon phase may reduce low-light bites, but sunny days should improve visibility for spotting risers, potentially elevating success in the B section. Key challenges include selective fish post-spawn and potential wind gusts affecting casts, but patient anglers can expect 10-15 fish days with proper techniques.

Recommendations

• Flies & Techniques: Focus on subsurface nymphing with a tandem rig: #18-20 Pheasant Tail or Hare's Ear nymphs (sizes 16-18) drifted under an indicator for mid-depth presentations targeting rainbows in runs; add a Zebra Midge (#20 black or red) for picky fish in slower water. For occasional surface action, try Parachute Adams (#18) during midday midges. Streamers like a small Woolly Bugger (#8 olive) swung in pools can provoke aggressive browns. Tie selections to cooler conditions emphasizing imitative patterns over attractors.
• Best Times & Tips: Optimal windows are 10 AM to 4 PM when solar warming activates feeding; avoid early mornings due to cold starts (dew point 13°F). Wading is safe with moderate gage height (8.18 ft), but stick to designated paths to prevent bank erosion—watch for icy edges near lows of 32°F. Sunscreen and layers are essential under sunny skies; check for floaters in popular sections.
• Gear Notes: A 5- or 6-weight rod (9 ft) with a 5X tippet excels for accurate nymph drifts and fighting larger trout; pack a floatant for potential dries and polarized glasses for glare off the water.

(Word count: 512)