Spring Chinook window holding on Columbia tributaries as late-May flows settle

What's Biting

What's Next

With water at 51°F and flows at 1,110 cfs as of May 31 (USGS gauge 14113000), Columbia tributary conditions are in a holding pattern broadly favorable for spring Chinook. As the calendar turns into June, water temperatures in snowmelt-fed Washington rivers typically climb a degree or two per week absent heavy precipitation. That gradual warming can push salmon into tighter early-morning and late-evening feeding windows, narrowing the productive stretch of day even as fish remain willing. If temps reach the mid-50s over the coming days, plan to be on the water at or before first light to catch the most comfortable feeding conditions.

For the Columbia mainstem and its warmer lower-elevation reaches, smallmouth bass are in or just past spawn as of late May. Post-spawn smallmouth in this region are known for aggressive feeding, and the next two to three weeks represent one of the stronger windows of the season for targeting them on soft plastics, tube jigs, and small crankbaits worked along rocky shorelines and current seams. The full moon overnight adds another angle worth noting: bass and other predators that feed by available light may extend their activity later into the evening on clear nights, rewarding anglers who stay out past sunset.

Puget Sound river systems are approaching the transition from spring to summer steelhead. Wild summer-run fish typically begin showing in earnest through June and July. At current water temperatures in the low 50s, these rivers are fishable, though expect some residual off-color water in drainages still receiving snowmelt from higher elevations. Nymph and wet-fly presentations work well in colored water; swung wet flies tend to shine as flows drop and clarity improves through June.

For weekend planning, the two to three hours bracketing first light offer the most consistent window on salmon-bearing Columbia tributaries. Keep an eye on WDFW stocking schedules as well: late-spring plants in accessible river sections often concentrate freshly stocked trout in predictable tailout areas, and that pattern holds through mid-June. Cooler overnight temperatures typical of late May in Washington can make the morning warm-up a brief trigger for surface activity from trout and bass in shallower reaches, worth timing if you have flexibility in your schedule.

Context

Late May typically marks the final weeks of the spring Chinook window on the Columbia system. Historically, spring Chinook runs peak through Washington's Columbia tributaries in April and May, tapering into June as fish push toward upstream spawning grounds. A water temperature of 51°F sits comfortably within the range salmon prefer, generally between 48°F and 58°F, suggesting the 2026 season is proceeding on a broadly normal schedule rather than running dramatically early or late.

For context, the 2026 angler-intel feeds available for this reporting cycle were sparse for Washington's Columbia and Puget Sound freshwater drainages. No charter reports, tackle-shop dispatches, or agency creel summaries specific to Washington freshwater surfaced in the current data snapshot. The WA WDFW Fishing Reports service maintains ongoing creel interview data for state waters, but specific catch tallies were not available in this cycle. Washington Sea Grant's current programming is focused on coastal and marine science and offered no freshwater bite intelligence for this region.

What the gauge reading does tell us: at 1,110 cfs and 51°F, this Columbia tributary is not in flood, not running dangerously cold, and sits within the typical range for the late-May post-peak-runoff period in the Pacific Northwest. Historically, late May into early June can be productive for spring Chinook precisely because elevated snowmelt flows have begun to settle, improving water clarity and making fish more approachable in holding lies.

The full moon on May 31 is consistent with a pattern many Pacific Northwest anglers note: increased nocturnal movement that makes the early-morning window after a full-moon night especially productive for salmon and steelhead. Without corroborating angler reports from this period, treat the above as seasonal context rather than confirmed current conditions. Check WDFW's creel reports and any recent access-point updates before making the trip.