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Three people holding large fish.

SW Washington Fishing Report: Coho Action Builds as Rivers Shift

Posted on December 19, 2025 by Seth Kolshinski

Weekly Overview Fishing activity across Southwest Washington is slowing as fall transitions into early winter. Salmon runs are tapering off, with only scattered coho still showing in select rivers. Steelhead have yet to make a strong appearance, leaving anglers in a bit of a lull. Lakes remain mixed, with Merwin producing occasional limits while Yale’s low water levels continue to puzzle. Overall, conditions are shifting toward a quieter season, with rain in the forecast likely to influence river flows in the coming days.

Lewis River The Lewis has seen a noticeable drop in activity, with fewer anglers on the water and catches becoming less consistent. While some bright coho are still being reported, success is sporadic and effort is declining. Both bank and boat anglers continue to find occasional fish, but the bite is far from steady. Rising flows from incoming rain may change conditions quickly, though the dam should prevent a full blowout.

Kalama River The Kalama is slowly coming back into shape, but fishing remains challenging. Anglers have reported mixed success, with no clear pattern emerging. Heavy rain is expected to impact the river later this week, potentially pushing it close to unfishable levels. Larger presentations and upriver efforts may offer better chances, though overall action has been limited.



Washougal River Reports from the Washougal have been scarce, with little activity observed along the river. Anglers searching for fish have found quiet conditions and minimal success. With no significant catches to note, this system appears to be entering a dormant period as the season shifts.

Cowlitz River The Cowlitz continues to show promise, with fresh coho pushing in and fishing improving steadily. Hatchery reports confirm strong numbers of coho and a mix of other species moving through. Anglers are finding consistent action, especially in the mornings, though the bite slows later in the day. Chum remain present in good numbers, but retention is closed, so focus remains on coho opportunities.

Tributary Weirs All weirs across the region have now been removed, signaling the seasonal transition. This change opens up tributary systems fully, though fishing activity remains light in many areas. With winter steelhead yet to arrive, most tributaries are quiet for now.

Columbia River No significant reports have come in from the Columbia this week. Effort has been minimal, and dam counts have slowed considerably. Attention will likely shift to other species, such as smallmouth bass, until steelhead begin to show later in the season.

Merwin and Yale Lakes Merwin remains fishable, though success has been inconsistent. Some anglers continue to find limits, while others report slower outings. Yale, on the other hand, is unusually low despite recent rains, leaving many puzzled about the drop in water levels. With winter approaching, conditions at both lakes will be worth monitoring closely.

Coastal Clamming Tentative dates have been set for upcoming coastal clamming opportunities, though final confirmation is pending. Low tides later this month should provide good conditions, with multiple beaches expected to open. Anglers and diggers alike will want to stay tuned for updates as the season progresses.

Stay fishy,
Seth Kolshinski

There is A LOT more for SW Washington Members here, and SW Washington members can find our complete Columbia River reports here.  

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1 thought on “SW Washington Fishing Report: Coho Action Builds as Rivers Shift”

  1. Chester Williams says:
    November 24, 2025 at 4:20 AM

    any idea what is going on with chemicals from tires when it rain you see suds on the road ways and they drain in the lakes and rivers . thanks

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