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.

The Green River in Dutch John, Utah, flows as a clear, tailwater fishery below Flaming Gorge Dam, renowned for its consistent flows and trophy trout in a scenic canyon setting.

Overall Fishing Conditions

Fishing conditions on July 31, 2025, look solid with warmer air temps around 87°F and above-average water flows at 1960 ft³/s, making for active fish despite potential smoke haze; I'd rate it a 7 out of 10 for good opportunities, though winds up to 15 mph could make presentations trickier.

Insect Hatches and Their Timing

Summer hatches like Pale Morning Duns and midges should be active in the afternoons and evenings as water temps hit 55.6°F. Caddis and terrestrials might pick up around dusk with the waxing crescent moon rising at 15:24.

Species to Target

Focus on rainbow and brown trout, which are abundant in the deeper runs and riffles due to the elevated flows.

Top 5 Fly Patterns to Use

• Parachute Adams for surface action during hatches.
• Pheasant Tail Nymph as a reliable subsurface choice.
• Elk Hair Caddis for evening caddis activity.
• Zebra Midge for midges in slower waters.
• Hopper patterns to imitate terrestrials in windy conditions.

Best Times of Day to Fish

Early morning before winds pick up for calmer water. Late afternoon around moonrise at 15:24 for increased insect activity. Evening after the heat subsides for the best overall bites.