Spring Chinook push peaks on the Columbia as May temps climb

What's Biting

What's Next

With water at 59°F and 1,310 cfs per USGS gauge 14113000, the Columbia system is entering one of its most productive mid-spring windows. Spring chinook — the primary target for Washington river anglers this time of year — are active in this temperature range, though 59°F is near the upper limit of their comfort zone. As daytime air temperatures continue to push through May, expect river temps to creep toward the low 60s within a few days, which typically accelerates chinook movement toward cooler upstream water. Anglers should prioritize the next 48–72 hours before any significant warming shifts fish behavior.

For smallmouth bass in the Columbia's warmer lower reaches and side-channel sloughs, 59°F puts fish right at the doorstep of spawn staging. Tactical Bassin notes that in similar late-spring transition conditions, the bite responds well to topwater presentations at first light and finesse rigs — drop-shot or swimbait — through midday. If temps tick past 62°F this week, bass holding in backwater eddies could be highly catchable on shallow-running lures. The simultaneous availability of spring chinook and pre-spawn bass makes this one of the region's most versatile multi-species windows of the year.

The Waning Crescent moon phase concentrates feeding toward low-light windows. Plan to arrive at the water 30–60 minutes before sunrise — dawn bites on both chinook and bass can be compressed but productive under a dark moon. Flow at 1,310 cfs suggests wadeable conditions in appropriate reaches; watch for clarity changes if daytime warmth accelerates snowmelt over the next 48–72 hours and flow ticks up.

Stocked rainbow and cutthroat trout, part of WA WDFW Fishing Reports' statewide stocking program, should remain active at 59°F throughout accessible river stretches. MidCurrent's fly-tying coverage this week highlighted beaded nymphs and CDC soft-hackle patterns for overcast, low-visibility conditions — techniques directly applicable to PNW river fishing in May, when cloud cover is the norm rather than the exception.

Weekend outlook: no local weather data is available in this cycle, but mid-May in the Cascades can shift from calm and overcast to wind-driven rain quickly. Overcast days typically push stocked trout to feed more aggressively near the surface, while chinook tend to settle into deeper holding lies when light penetration drops. Keep both rigs ready.

Context

Mid-May on the Columbia and Puget Sound tributary systems typically represents the heart of the spring chinook migration window, and a 59°F reading on May 12 is broadly consistent with seasonal norms. In an average year, Columbia tributaries cross 55°F in late April and climb into the upper 50s through May, with spring chinook run timing peaking in April and May depending on specific reach and run composition. By that measure, current conditions appear on-schedule — neither the weeks-ahead warmth of an early season nor the lagging cold of a late one.

Flow at 1,310 cfs on gauge 14113000 reflects a moderate, fishable level — neither the elevated, discolored water that follows a significant snowmelt surge nor the low-water warmth stress of a drought-year trough. This kind of stable, moderate flow is consistent with what you'd expect from regulated Columbia tributaries in late spring, where dam operations buffer the most extreme runoff peaks.

WA Sea Grant's ongoing ecological monitoring provides useful seasonal context. Their Crab Team researchers documented Pacific tomcod appearing in Grays Harbor estuary traps last fall — a notable first at those monitoring sites — underscoring how dynamically Washington's fish assemblages can shift year to year. While that observation came from tidal habitat rather than mainstem river water, it reflects the kind of population-level tracking that helps put any single season's fishing patterns in perspective.

Specific year-over-year comparisons for Columbia and Puget Sound tributary fishing weren't available from this cycle's angler-report feed, so a direct vintage comparison isn't possible. Based on gauge data alone, conditions look broadly on-pace for the second week of May. Always verify current WA WDFW regulations before heading out — spring chinook retention rules vary by drainage, date, and in-season run counts, and can change on short notice mid-season.