Columbia River spring Chinook winding down as late-May flows run strong

What's Biting

What's Next

**Conditions over the next 2–3 days**

With 207,000 cfs moving through the mainstem as of this morning, the Columbia is running full but not at flood stage — a normal profile for late-May snowmelt years in the Pacific Northwest. No weather data arrived in our current feed, so check the National Weather Service Pacific Northwest outlook: a warm sunny stretch pushing additional mountain snowmelt will hold flows elevated or climbing through early June, while a cooler pattern could begin the slow drawdown that typically improves presentations and bank access by late June.

**What should turn on if trends hold**

At 60°F, water temps are nudging toward the upper end of the spring Chinook comfort range, which typically runs mid-40s to low-60s. Late-run spring fish holding in slower water should still be responsive to back-trolling herring or eggs worked tight to eddy seams and current breaks. As flows gradually ease through June, anchor points and switcher runs become more consistent — fish are less scattered when the main channel calms down. The shift to watch for is summer Chinook registration at Bonneville: when summer counts pick up meaningfully, the spring-Chinook harvest window often closes or tightens, so verify ODFW emergency orders before each outing.

**White sturgeon outlook**

Sturgeon fishing should remain solid through this period. Focus on deeper troughs and channel-change points where fish hold during high-water periods. Bottom rigs with smelt, sand shrimp, or eel fished on a slow drift through holding structure are the standard approach. With the full moon this weekend, expect heightened feeding activity during early-morning and late-afternoon solunar windows — plan your launch time accordingly and confirm current retention quotas before keeping anything.

**Weekend timing windows**

Memorial Day weekend brings increased pressure to the most accessible Columbia River boat launches near the Portland metro. An early Saturday or Sunday morning start, targeting the first two hours of daylight during the full-moon major solunar period, gives you the best shot at active fish and manageable boat traffic. If targeting sturgeon, the afternoon high-activity window — typically three to five hours after the morning peak — is worth planning around as well. Anglers willing to run upriver toward the mid-Columbia will find less competition at access points while still fishing the same seasonal conditions.

Context

The Columbia River at 207,000 cfs sits squarely within the range anglers expect for late May in a moderate-to-above-average snowpack year. Peak spring freshet on the Columbia typically arrives between late April and early June, and flows in the 180,000–250,000 cfs band are common through Memorial Day weekend — so this morning's reading reflects a normal seasonal profile rather than an unusual high-water event.

At 60°F, water temperature is slightly warmer than the mid- to upper-50s that characterize peak spring Chinook activity, which historically aligns with the mid-April through mid-May window at Bonneville Dam. By late May the spring run is statistically winding toward its close, with the transition to summer-run patterns underway. Oregon spring Chinook counts at Bonneville generally peak in early-to-mid May, and the late-May stretch sees diminishing but fishable numbers ahead of summer Chinook counts building in June — entirely consistent with where this season stands today.

White sturgeon follow a different calendar. Oregon's white sturgeon fishery on the Columbia operates under a year-round quota system, and late May historically falls within a productive stretch before the warmest summer temperatures arrive. Sturgeon are notably cold-tolerant but do shift feeding behavior as water temps push into the upper 60s; at 60°F we're still comfortably within their active feeding window.

No current-season comparative signals from charter captains, tackle shops, or state agency reports appeared in our angler-intel feeds for the Columbia River corridor this week — an honest gap worth acknowledging. The portrait here reflects gauge data and multi-decade seasonal patterns for this fishery rather than fresh on-the-water testimony. Anglers with recent mainstem experience can add meaningful context that the available feeds do not cover this cycle.