Columbia steelhead run at historic lows as fall flows stay lean

What's biting

What's next

Expect tributary flows to hold near current levels absent rain, keeping the smaller gauges thin and clear. If temperatures ease further into the upper 50s over the next few days, that's the seasonal cue for steelhead to push harder into the system's cooler feeder streams, worth watching gauge 14211550 and 14211542 for any uptick that would signal fish moving. Given the historically low run Hatch Magazine describes, angling pressure this fall may need to concentrate on the stretches still holding fish rather than spreading thin.

The waning gibbous moon into early October favors low-light windows: dawn and dusk periods typically produce better activity than midday. Weekend planning should factor in checking gauge readings the morning of, since flow can shift quickly with any rain system moving through the Pacific Northwest this time of year.

Context

Late September is normally the ramp-up to peak fall steelhead activity in Columbia system tributaries, as fish push upstream while water cools. This year's run is running well behind typical volume, per the Bonneville Dam count Hatch Magazine cites, which shifts the outlook to fewer fish spread across the same water. The flow split visible in current readings, thin upper gauges against a fuller mainstem, is otherwise a normal seasonal pattern for this point in the year.