Fall Chinook Chatter Builds on the Columbia as Puget Sound Rivers Wait on Coho

What's biting

What's next

With no fresh buoy or gauge telemetry in today's feed, the next few days call for reading the season rather than a live readout — expect this section to sharpen once instrument data returns.

Fall Chinook typically build steadily through early-to-mid September as fish stage in the lower Columbia before pushing into tributary mouths, and the IFish.net chatter around Buoy 10 — solo trollers reporting hot action just north of the legal boundary — fits that pattern. Treat it as one angler's report rather than a confirmed trend; if the bite is real, expect more forum and shop chatter to corroborate it over the coming week as boat traffic in that stretch increases. Watch for that corroboration before planning a dedicated trip around it.

Coho are the wildcard over the next 2–3 days. They're generally still staging in Puget Sound and lower river reaches this early in September, with the stronger push into freshwater typically arriving as water cools later in the month. Anglers working river mouths and estuary edges should expect scattered fish rather than a full run yet, with better numbers likely by mid-to-late September.

On the Olympic Peninsula, interest in guided Hoh River floats is already active — a forum angler on The Fly Fishing Forum is lining up a walk-or-float trip this month — which tracks with typical early-fall guide demand as flows stabilize after summer lows. If you're planning a Hoh trip, weekday bookings are worth chasing now before fall weekend demand picks up.

The Last Quarter moon phase generally means more moderate tide swings than during full or new moon periods, so tidal reaches of the lower Columbia (including the Buoy 10 zone) should see calmer, more predictable water over the next few days — a good window for boat anglers working structure without fighting extreme current.

Bottom line for planning: if you're chasing Chinook, the lower Columbia estuary is the area to watch based on current chatter, but confirm with a local shop or recent report before committing a full day. If you're after Coho or steelhead, patience is still the better bet this week — both fisheries are more likely to sharpen over the next two to three weeks than the next two to three days.

Context

Early September sits at a well-known seasonal hinge for Columbia and Puget Sound river systems: fall Chinook runs are typically building through the month as fish stage in the lower river and estuary before pushing into tributaries, while Coho are usually still mostly holding offshore and in the Sound ahead of a bigger freshwater push later in September and into October. Summer steelhead fishing is normally winding down around now, ahead of the following winter run. The Buoy 10 chatter on IFish.net — solo trollers describing hot Chinook action — fits that general calendar, since Buoy 10 is historically one of the most heavily fished lower-Columbia Chinook spots in late summer and early fall. WA WDFW Fishing Reports' ongoing creel program is the state's standard tool for tracking exactly this kind of run progression, though today's feed didn't surface specific catch numbers to compare against past years. Guide interest in Hoh River floats, as reflected in The Fly Fishing Forum post, also tracks with a normal early-fall pattern on the Olympic Peninsula as summer flows stabilize. We don't have enough comparative data in today's sources — no historical catch rates, no multi-week trend — to say with confidence whether this year's Chinook push is running early, late, or right on the usual pace. That's a fair gap to be honest about rather than guess at.