Flaming Gorge, Utah

Best Flies For Green River

Green River | Flaming Gorge, Utah | Updated Apr 24, 2026, 8:21 AM MDT | Station: Green River near Greendale

Small bugs still win here: midges, BWOs, scuds, and sowbugs, fished on a precise nymph rig until the hatch gets obvious.

Green River is fishing around blue-winged olives and midges. Start with the patterns below and adjust only after fish show you something different.

What's active
Fish this
Blue-winged olives, size 18-20, midday and afternoon
CDC BWO, size 18-20, dry; RS2 olive, size 18-20, emerger
Midges, size 18-22, morning and evening
Zebra Midge black, size 18-20, nymph; Griffith's Gnat, size 18-20, dry
Scuds and sowbugs, size 14-18, all day subsurface
Sowbug gray or cream, size 14-18, nymph; Pink or tan Scud, size 14-16, nymph
  • Fish long drifts through weed lanes and the soft edges of deeper buckets with small flies and enough weight to stay in the lower half of the column.
  • Target seam lines off grass beds, transition shelves, and quiet slicks below riffle tongues.
  • When fish begin rising consistently, switch to a BWO or midge dry only after you have the right lane and angle. Green fish punish drag quickly.
FlowDam-regulated flows keep trout in repeatable holding water unless releases shift hard.
Water TempStable cold water means fish stay active and predictable through long parts of the day.
WeatherLight cloud cover helps the hatch and keeps fish less wary in the slicks.
Rating8/10