Yellow Sally Season Arrives on Idaho's Snake and Salmon Rivers

What's biting

What's next

With 7,280 cfs moving through the Salmon corridor at 62°F, conditions sit at the inflection between late-runoff push and fishable summer structure. If the region holds typical late-June weather patterns, flows should ease further toward wade-accessible levels within the next several days, opening up gravel bars and pocket water that have been blown out since May.

**Trout and Whitefish**

Yellow Sallies are right on schedule for Western river systems at this elevation, as Caddis Fly (OR) highlighted in their summer dry-dropper coverage. Morning hours are typically best while the stoneflies are on the water; a size 14 nymph under a parachute attractor or large caddis dry is the standard rig. Evening caddis hatches often provide a second window as canyon walls lose direct sunlight. Mountain whitefish will stack in deeper slots and respond to small nymphs drifted close to the bottom.

**Lower Snake Canyon: Smallmouth Bass**

The Snake River canyon below Hells Canyon Dam hosts one of the Pacific Northwest's most consistent summer smallmouth fisheries. With water approaching 62°F, bronzebacks will be holding on rocky structure and current seams. Topwater presentations work well in low light; tube jigs and grubs along basalt ledges tend to produce through the midday heat when fish push deeper.

**Salmon and Steelhead**

Spring Chinook are in their late-season phase and any fish still moving upstream will be pressured and tight-lipped. Summer steelhead are beginning to enter the system but are historically difficult to move in the warmer months: September through November is the more productive steelhead window on these rivers. Always check current Idaho regulations before targeting either species, as retention rules can change week to week during active run periods.

**Full Moon Timing**

Tonight's full moon (June 28) tends to shift low-light feeding windows on open canyon water. First light and the hour around dusk are the best bets; expect fish to push shallower in fading light on accessible Snake River bank-fishing stretches.

Context

Late June on the Snake and Salmon Rivers is historically a resident-trout month: the window between the winding-down spring Chinook run and the onset of meaningful summer steelhead activity. In most years this is when early-season crowds thin and serious trout anglers move in to work the stonefly and caddis hatches.

Flows at the Salmon River gauge in the 5,000 to 9,500 cfs range are typical for late June as upper-basin snowpack melts out, and this year's 7,280 cfs reading sits within that historical band with no obvious anomaly. The 62°F water temperature is moderate for late June: cold enough to keep trout comfortable in main-stem reaches but warm enough to trigger good surface activity when Yellow Sallies and caddis are present.

Wired 2 Fish reported a 43.25-inch Idaho lake trout caught at Payette Lake near McCall in early May, which offers a useful data point for the broader drainage. The interior mountain lakes in this region held cold water well into spring, suggesting a heavier-than-average snowpack year that delayed warming across the system. That cold-lag energy is now working through the river corridor, which may explain why main-stem temperatures remain on the moderate side of the late-June range.

Hatch Magazine's recent examination of bull trout fishing ethics in the Northwest is a timely backdrop for anyone planning a trip into the Salmon River backcountry. Bull trout occupy the coldest headwater tributaries and are listed as threatened under the Endangered Species Act across much of their Idaho range. No sources in the current intel put bull trout in strong condition on the Snake-Salmon corridor; historically, most productive trout fishing at this time of year centers on rainbow and cutthroat in accessible mid-river reaches rather than backcountry bull trout habitat.