Columbia Summer Chinook and Sturgeon Active Through Late-June Warmth

What's biting

What's next

Over the next two to three days, the Columbia will likely hold in the mid-to-upper 60s Fahrenheit barring a significant cold front or substantial cool tributary inflow. Late June in Oregon rarely brings the kind of weather event that would drop river temperatures quickly. With the Fourth of July holiday weekend approaching, expect considerably more boat traffic, which tends to push fish away from shallower nearshore structure and deeper into the main channel — a pattern that rewards anglers willing to anchor out in the current rather than working the banks.

The full moon on June 29 is the most immediate tactical variable for lower-river anglers. The tidally influenced reach below Bonneville Dam sees stronger flood and ebb exchanges during full-moon cycles. The transition from slack water to ebb has historically been productive for both Chinook and sturgeon as baitfish redistribute and larger fish move opportunistically. Plan early morning outings timed around those current transitions through the holiday weekend.

For summer Chinook, the warmest afternoon hours — typically 1 to 5 p.m. — are the least productive at these temperatures. Fish tend to go deep and suspend, making vertical presentations and anchor fishing more effective than horizontal retrieves. Cured eggs, herring, or spinners fished at depth in the main channel, targeting the cooler thermal layer below the sun-warmed surface, is the traditional late-June approach. If you can identify points where cooler tributaries enter the mainstem, those confluences are worth prioritizing; salmon will stack in those thermal breaks, especially mid-afternoon when the main channel warms most.

Sturgeon fishing should hold up well through the weekend. White sturgeon tolerate warmer water than Chinook — 66°F is comfortably within their range. Bottom presentations near rocky structure and channel ledges using smelt, sand shrimp, or lamprey remain the standard approach. Peak activity tends to cluster near first light and dusk. If heat persists into early July, expect most productive windows to compress further toward dawn and the hour after sunset.

Summer steelhead are typically beginning to show on the Columbia in late June, with numbers building through July. Current seams and tail-outs in lower-light conditions are worth a few swings on the way in or out.

Context

Late June on the Columbia River is the transition window between two distinct salmon runs. The spring Chinook — the prized Springer fish that draw anglers to Bonneville, The Dalles, and lower tributaries from March through May — are typically winding down by mid-June. What follows are the summer Chinook, historically among the largest Chinook on the river before hydropower development altered migration timing and passage. Summer steelhead begin showing in earnest through this same window, building toward a July peak.

A water temperature of 66°F is on the warm end for the Columbia in late June. In most years, snowpack-driven flushing from the Cascades and northern Rockies keeps the mainstem in the 58–64°F range through much of June. A reading at 66°F suggests an early warming trend or a reduced-snowpack year, and it falls at the threshold where fish passage at Bonneville Dam can begin to slow — passage rates often drop noticeably once temperatures push past 68°F. That benchmark is worth watching over the coming week if warm weather persists.

The flow of 148,000 cfs sits on the higher side for late June, which is in some tension with the elevated temperature — high snowmelt flows normally correlate with cooler water. The combination likely reflects warm-weather runoff blending with late residual snowmelt, a pattern seen in years where spring heat arrives before the snowpack is fully exhausted.

Direct local reports from Columbia River guides, Portland-area tackle shops, or Oregon angler forums were not present in this cycle's intel feeds beyond lost-and-found posts, making a direct season-to-date comparison unavailable. Wired 2 Fish's recent piece on a 1,200-pound white sturgeon on British Columbia's Fraser River is the closest regional sturgeon reference in available data — useful context for Pacific Northwest sturgeon activity this season, but not a substitute for local Columbia River ground truth. When local reports resume, water temperature trajectory will be the key variable to watch.