Spring Chinook in the zone as Columbia rivers hit mid-May stride

What's Biting

What's Next

With gauge 14113000 reading 1,370 cfs, flow is at a moderate, fishable level for mid-May. Columbia basin snowpack typically continues melting through late May, so flows on smaller tributaries may tick upward incrementally over the next 7–10 days — monitor the USGS gauge for your specific reach if you're planning a weekend wade session, and be ready to shift toward heavier terminal gear if depth and current increase.

The 55°F water temperature puts spring Chinook in their preferred thermal window, broadly 48–58°F. If afternoons warm through the week and surface temperatures nudge toward the upper 50s, early-morning sessions before the heat builds will be the premium window. Drift rigs with eggs or cured bait on known holding seams, and back-trolling with plugs through slower bends, are the time-tested approaches for staging fish at this point in the spring run.

Resident rainbow and cutthroat trout are well-positioned for caddis and mayfly activity. Hatch Magazine's current caddis emergence coverage is directly on-point for Pacific Northwest rivers in mid-May: elk hair caddis, soft-hackle wets, and caddis pupa patterns fished at dusk are worth rigging alongside a searching nymph for midday coverage. The waning crescent moon through the end of this week reduces surface light and can extend productive evening feeding into the first hour after dark — bring a headlamp.

Tactical Bassin's post-spawn bass content for early May highlights a split pattern: some fish pushing to shallow cover (frog, topwater), others dropping to adjacent structure transitions (drop-shot, finesse presentations). Columbia smallmouth fit this profile well for mid-May — target shallow gravel bars and rock shelves in the morning, then follow fish to deeper seams as the sun climbs.

American shad are worth keeping on your radar. The Columbia's shad run typically builds through late May and peaks in June — early fish may already be staging in the lower river. Small darts and shad rigs drifted across current seams near boat ramps are the efficient approach when shad arrive in earnest.

Context

Mid-May is a transitional inflection point for Washington's Columbia system and Puget Sound-draining rivers. The spring Chinook season — the marquee early-season sportfishery — is well underway, with peak effort typically concentrated between late April and mid-June depending on run-timing forecasts. A 55°F reading on May 11 is broadly on schedule: typical years see the Columbia drainage climb from the mid-to-upper 40s in early April through the low-to-mid 50s by the second week of May, with 55°F representing a healthy mid-run temperature.

The 1,370 cfs gauge reading deserves some context. Main-stem Columbia flows this time of year are driven by upper-basin snowpack and are typically far higher — well into the tens of thousands of cfs during active snowmelt years. A 1,370 cfs reading is consistent with a monitoring site on a tributary or a smaller regulated reach rather than the mainstem. If you're planning mainstem fishing, flows will be substantially higher at your access point; always check the USGS gauge specific to your reach before launching a boat.

WA Sea Grant's current regional field activity — Puget Sound estuary monitoring, green crab surveys in Grays Harbor, and coastal resilience work — confirms that the biological spring calendar in the Pacific Northwest is running at a normal pace in 2026. No major anomalies in water quality, run timing, or thermal conditions surfaced in available state-agency feeds this week.

One honest caveat: no charter, tackle shop, or creel-survey bite reports specific to the Columbia or Puget Sound drainages appeared in available angler-intel feeds this cycle. The species assessments here are grounded in gauge data, seasonal norms for mid-May in this region, and nationally applicable fishing content where relevant. For real-time run updates, stocking news, and emergency closures, WA WDFW Fishing Reports is the authoritative source — check it before every outing.