Columbia River Chinook at a Crossroads as July Heat Arrives

What's biting

What's next

With the Columbia running at 139,000 cfs and 66°F as of July 4, flows will likely continue their gradual seasonal decline as spring runoff tapers — though any heat wave in the upper basin can temporarily spike inflows from snowmelt tributaries. Water temperature is the more urgent variable to watch: at 66°F, sustained heat pushes fish deeper or toward cooler tributary confluences, where cold groundwater inflows offer thermal refuge for staging salmon.

The Waning Gibbous moon on July 5 means the full moon passed just days ago. Salmon typically respond best during low-light windows; dawn and dusk sessions should be prioritized over the next several days as the moon wanes toward its last quarter. Sturgeon feed more opportunistically around the clock — elevated flows often concentrate bait fish into predictable current seams, placing white sturgeon in the deeper main-stem slots of the mid- and lower river.

If temperatures hold at or above 66°F, keep a close eye on Oregon Department of Fish and Wildlife emergency thermal closure orders, which can restrict salmon retention on short notice. The fall Chinook run typically begins showing in meaningful numbers in the lower river by late July and into August — any cooling weather event or brief flow pulse could pull early fish in ahead of schedule, so it is worth checking local conditions frequently as the month progresses.

For sturgeon this weekend, the elevated-but-declining flows look favorable: current is still strong enough to funnel forage fish into predictable slots without washing gear out of position. Work the deep holes with natural bait through the tidal influence zone of the lower river. Verify current slot-limit retention rules before harvesting — the limit has historically sat in the 38-to-54-inch fork-length range, but regulations can change on short notice, so confirm before you keep a fish.

Short-term plan: target the early-morning window when surface temps are at their daily low, work tributary confluences for any salmon activity, and be prepared to pivot to sturgeon if the Chinook bite stays muted under warm-water conditions.

Context

Early July on the Columbia River is typically a transitional lull between the spring Chinook season — which peaks April through June in the lower river — and the fall Chinook push that begins building from late July into August. A flow of 139,000 cfs on July 4 is on the higher side for this calendar date, suggesting a later-than-average snowmelt or a wet June in the upper basin; by mid-to-late July, Columbia flows typically settle below 120,000 cfs under normal conditions, so further gradual easing is expected over the coming weeks.

Water temperature at 66°F is consistent with warm-summer norms for the Columbia in early July, but it sits at a biologically significant threshold. Pacific salmon — Chinook in particular — experience meaningful physiological stress as temperatures approach and exceed 68°F. Oregon fisheries managers have in past years implemented voluntary and mandatory closures when temps spike above that threshold for sustained periods. Whether conditions this year remain below the closure line depends on the extended forecast for the upper basin over the next several weeks.

None of the angler-intel sources available for this report provided direct comparative data on the 2026 Columbia River season. IFish.net Fishing Reports, Oregon's most active regional angler forum, had posts from the state this week — but they addressed only lost gear at locations including Meldrum Bar and the Wilson River, with no signal on run timing, catch rates, or gear performance. No fishing blogs in the current intel cycle covered Pacific Northwest salmon or sturgeon.

In the absence of direct comparative intel, conditions appear within normal seasonal bounds. Anglers familiar with July on the Columbia will recognize the pattern: the most productive salmon fishing typically resumes after the first meaningful cold front drops water temperatures and early fall Chinook begin staging in the lower river.