Ennis, Montana

Best Flies For Madison River

Madison River | Ennis, Montana | Updated Apr 24, 2026, 7:00 AM MDT | Station: Madison River at Ennis

Fish the inside seams and softer buckets with a two-fly nymph rig early, then watch for blue-winged olives and midges once cloud cover settles in.

Madison 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, late morning through mid-afternoon
Parachute BWO, size 18-20, dry; Split Case BWO, size 18-20, nymph
Midges, size 18-22, morning and again in the soft evening light
Griffith's Gnat, size 18-20, dry
Skwala stoneflies, size 8-12, afternoons along grassy banks and slower edges
Pat's Rubber Legs, size 8-10, nymph; Skwala Chubby, size 8-10, dry
General subsurface
Pheasant Tail, size 16-18, nymph
  • Start with an indicator rig: stonefly or heavier jig up top, BWO or midge trailer 12-18 inches behind it.
  • Work riffle tails, inside seams, and the softer edge of deeper buckets before the hatch starts.
  • If fish begin showing on top, shorten up, drop the indicator, and fish single dries or a dry-dropper tight to bank structure.
FlowDam-controlled spring flow that usually stays fishable unless runoff muddies the lower river.
Water TempCold enough to keep the best feeding window from late morning through mid-afternoon.
WeatherCloud cover and wind matter more than raw air temperature here. Overcast tends to improve BWO activity.
Rating7/10