Blackfoot River Fishing Report: May 16, 2026

Runoff is in full swing across western Montana, with a cold, wet weekend pushing flows higher and snow showers in the forecast through Sunday before things dry out and warm into the 60s by midweek. Reminder: tributaries open today, 5/16. The Bitterroot is currently the most fishable of the four — better edge structure and side channels — but it is still big, off-color, and demands disciplined water selection.

At-a-glance: High and dirty · Visibility off-color · 50°F mid-day · ~5,100 CFS at Bonner · Grizzly Hackle: 1/5 · Best window: 11:00 a.m. – 3:00 p.m.

Conditions

Flows jumped to ~5,900 CFS earlier in the week and clarity has dropped (Kingfisher fingers Monture Creek as the historical culprit since the upstream landslide). Blackfoot River Outfitters notes the high pushy water has shoved holding fish tight to the willows, so margins are tiny and wading is hazardous. Upper river near Helmville is around 1,000 CFS — high for up there. Fishing will be spotty until flows level and clarity comes back.

Best Techniques

• Nymphing is the main game — heavy rigs to get down fast in pushy water.
• A dry-dropper run tight against the willows with a Chubby Chernobyl or Water Walker up top and a Rubber Legs, TJ, or San Juan Worm underneath.
• Streamers are pulling aggressive fish out of heavy cover — dark, high-contrast patterns fished slow and deep along structure.

Hatches & Fly Recommendations

• Subsurface: Pat's Rubber Legs, TJ Hooker, Zirdles, Double Bead Stones, SJ Worms, Wire Worms, Squirmy Worms, Pheasant Tails, and dark perdigons.
• Dries (limited): Carlson's Purple Haze, Elk Hair Caddis, Goddard Caddis, Furminksy's Fluttering Foam Caddis, Stranahan's Brindle Chute, MFC Hot Spot Para-Wulff — Brindle, and MFC Hot Spot Para-Wulff — Green Drake on warmer afternoons when the occasional March Brown, BWO, or straggling Skwala shows.
• Streamers: Sparkle Minnows, Kreelex Minnows, dark Woolly Buggers, sculpin patterns.

Outlook

Cool weekend with highs near 50 dropping into the 40s with rain/snow showers through Sunday near Ovando; sun returns Monday and pushes back to upper 50s / low 60s by week's end. Salmonflies are around the corner — have a few in the box.