Forecast Location
Daily River Forecast
Blackfoot River
Ovando to Bonner, Montana
Updated for May 1, 2026
Top Summary
Expect a nymph-and-streamer day more than a hatch day unless you catch a softer weather window. Focus on inside banks, slower side channels, and depth changes off heavy current where fish can feed without burning energy.
Current Conditions
- Flow: The Blackfoot can change quickly in spring, so clarity and side-channel volume matter as much as raw flow.
- Water Temperature: Cold spring water usually keeps fish near softer edges and deeper buckets until the afternoon.
- Weather: A stable, cool day helps. Sudden heat pushes the river toward runoff behavior fast.
- Overall Rating: 5/10
What's Happening Right Now
Blackfoot trout in late April are usually opportunistic rather than selective. Fish hold close to soft banks, side seams, and woody structure where current breaks give them a stable lie. If the river is clear enough, nymphing remains the highest-percentage play, but a stripped streamer can move fish along undercut banks and darker slots.
What's Hatching
- Blue-winged olives, size 18-20, sporadic midday
- March Browns, size 12-14, warmer afternoons
- Midges, size 18-22, slower water in the morning
Best Flies To Use
- Pat's Rubber Legs, size 6-8, nymph
- Hare's Ear, size 14-16, nymph
- Prince Nymph, size 12-16, nymph
- Zirdle Bug olive or black, size 6-8, streamer
- Parachute Adams, size 14-18, dry
- BWO Comparadun, size 18-20, dry
How To Fish It
- Start by checking clarity. If you cannot get away with a standard nymph rig, fish bigger profiles or streamers with slower strips.
- Target the inside bend, the protected edge below structure, and any slower side seam beside the main tongue.
- If you find a clear, buggy stretch in the afternoon, swap to a mayfly dry only after you see actual rises.
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About The Blackfoot River
The Blackfoot flows northeast of Missoula and is known for classic freestone structure: boulders, wood, deep bends, and long riffle-to-run transitions. It is a river that fishes on mood and clarity more than on a rigid tailwater schedule.
Westslope cutthroat, rainbow, brown, and bull trout all occur in the system, though regulations and seasonal considerations matter depending on the reach. Many anglers think of it as a streamer and attractor river, but there are real hatch windows when conditions stay stable.
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