Spring Chinook peak meets post-spawn bass on the Columbia & Rogue

What's Biting

What's Next

With water sitting at 65°F and flows at 9,510 cfs, the next two to three days should sharpen several patterns simultaneously across both river systems.

**Smallmouth Bass:** Tactical Bassin reports the bluegill spawn is fully underway nationally, which draws predatory bass into heavy cover and onto topwater. Frog patterns and topwater poppers are productive in early morning low-light windows on Columbia backwater sloughs and rocky points; Tactical Bassin recommends adapting into swimbait and finesse approaches — including a Karashi-style presentation — as the sun climbs. The post-spawn transition means baitfish-imitating swimbaits skipped through structure can extend the day's bite well past the topwater window. Plan early launches to catch the most aggressive surface window before midday sun flattens activity.

**Spring Chinook:** Main-stem Columbia springer fishing typically reaches its seasonal apex in the weeks bracketing late May. On a waning crescent moon — the current phase — dawn movement windows are generally the most productive, as fish push into fresh holding water before full light. Back-trolling plugs and drift-fishing roe through known holding slots remain the standard approaches at high flows. Check state regulations for current retention rules before heading out, as wild versus hatchery fish distinctions affect harvest options.

**American Shad:** The Columbia's shad run gains momentum as water temperatures climb above 60°F. With our gauge reading already at 65°F, shad should be moving actively through the lower and mid-Columbia. Small shad darts and light jigs in chartreuse or pink, fished through current seams below dam tailraces, are the go-to approach. Access points along the lower Columbia corridor typically yield the best early-season shad action as the run builds.

**Rogue Fly Water:** Per MidCurrent's hatch coverage, caddis emergences are building on freestone rivers and will continue to intensify through May. On the Rogue, afternoon and early evening see the most reliable surface activity — soft-hackle wet flies swung through the current produce when fish are feeding just below the film. Transition to a matching caddis dry as the hatch reaches the surface in the last hour of light.

**Flow Outlook:** At 9,510 cfs, main-stem wading is impractical. If runoff begins to moderate later in the week — typical as late-May snowmelt cycles stabilize — side-channel and tributary-mouth access should improve for wade anglers. Monitor the USGS gauge directly for trend data before your trip.

Context

Mid-May on the Columbia and Rogue systems is historically one of the most productive windows in Oregon's freshwater calendar. Spring Chinook runs typically peak through late May before yielding to summer steelhead and the Columbia's prodigious shad migration. Smallmouth bass are usually at or near their annual feeding peak as post-spawn fish reconnect aggressively with forage. Freestone tributaries like the Rogue's upper reaches see their best insect hatches — caddis, pale morning duns, and golden stones — through May and June, making it a premier destination for fly anglers.

The 65°F reading at USGS gauge 14211720 sits on the warmer end of what is typical for mid-May in Oregon's interior river drainages, where main-stem temperatures more commonly range from the mid-50s to low 60s at this stage. Elevated readings can push bass spawning activity ahead of schedule and may concentrate Chinook into cooler, deeper holding lies rather than the shallower runs where back-trolling is most efficient — worth keeping in mind when selecting depth and presentation.

Broadly, Western Outdoor News notes that 2026 has seen unusually warm ocean temperatures along the Pacific Coast — in some California areas running significantly above historical norms — suggesting a regional pattern that may be influencing Oregon freshwater systems earlier in the season than historical averages would predict. Anglers who fished these same rivers in prior Mays may find conditions slightly advanced.

No angler-intel feeds this week provided direct on-the-water testimony specific to the Columbia or Rogue. The Wired 2 Fish and Tactical Bassin reporting reflects national bass-fishing patterns broadly applicable to the region, and MidCurrent's hatch coverage applies to Pacific Northwest freestone rivers generally. Local charter or guide reports will sharpen the picture considerably before your trip.