Snake River, Hells Canyon Dam to Clearwater Confluence (Lewiston)

September 20, 2026

By Barbless, compiled each morning from the gauges, forecasts and sources on this page.

Snake River, Hells Canyon Dam to Clearwater Confluence

Current conditions for Snake River, Hells Canyon Dam to Clearwater Confluence (Lewiston) · Map, access and gauges

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Flow

12,100 cfs

Trend

Steady

Observed

27d ago

Conditions

The steelhead run is just getting started on the lower Snake, though returns have been lower than historical averages across the Columbia and Snake systems. As of September 25, flows were running at 12,100 cfs near Anatone and holding stable. September weather has been clear and cool, with overnight lows around 60 degrees and highs in the mid-70s. This is prime early-season timing for plugs, drifted roe, and streamers if you're targeting fresh fish moving upriver.

Gauges