Columbia Basin bass fire up as mid-June steelhead push begins

What's Biting

What's Next

**Conditions over the next 2–3 days**

With gauge 14113000 holding at 975 cfs and 64°F as of June 13, the Columbia system is in moderate early-summer flow. Mid-June typically marks the tail end of meaningful snowmelt runoff in Washington, so flows should stabilize or ease slightly heading into next week. The more pressing variable is air temperature: if afternoon highs climb into the upper 80s or 90s — common for eastern Washington in June — water readings could push past 65°F by mid-afternoon. That threshold matters for trout, and it's worth checking gauge data on the morning you plan to fish.

**What should turn on soon**

The new moon phase this weekend is your biggest ally. Minimal ambient light at dawn and dusk concentrates feeding activity across species, and bass in particular tend to move aggressively onto shallower structure during new-moon low-light windows. Outdoor Hub's Washington tournament calendar shows heavy angling pressure already building at Moses Lake, Potholes Reservoir, and Banks Lake — if tournament anglers are committing to the Columbia Basin now, the smallmouth bite is worth chasing.

For summer steelhead, mid-June is traditionally when the first meaningful push of summer-run fish arrives in Columbia tributaries. Water at 975 cfs and 64°F is well within summer steelhead tolerance — moderate flows with good visibility create solid holding and moving conditions. Tributary mouths and main-stem tailouts are the classic early-entry interception points. No direct catch confirmation was available this cycle, so treat this as a seasonal-window opportunity rather than a confirmed bite.

Trout anglers should plan around first light. The two to three hours after sunrise — before water temperatures climb from overnight lows — give you the most active feeding window. Nymph and wet-fly presentations in riffles fed by cold side-channels are the move. As Field & Stream's temperature guide cautions, once afternoon readings push past 65°F, catch-and-release stress rises quickly; consider pivoting to bass or steelhead when midday heat arrives.

**Plan around these windows**

Dawn bite: trout and steelhead. New moon means darkness persists longer into early morning — use it. Late afternoon into dusk: smallmouth bass on rocky Columbia Basin structure. Bass tournament pressure at the major reservoirs peaks midday, so arriving early or fishing the evening transition puts you ahead of the crowd.

Context

Mid-June in Washington's Columbia system and Puget Sound tributaries marks a well-established seasonal transition. Spring Chinook runs — which typically peak at Bonneville Dam in April and May — are winding down or have peaked by the second week of June, while summer-run Chinook and summer steelhead begin their entries. A water temperature of 64°F at gauge 14113000 is consistent with normal early-summer progression for a mid-Columbia river section. It is not alarmingly warm for this date, but it signals that the prime trout window is narrowing and the warm-water bite is ascending.

The broader western context is worth noting. Wired 2 Fish reported this week that prolonged drought and falling reservoir levels are triggering significant fish kills across the West — Arizona's San Carlos Lake lost its entire population of largemouth bass, crappie, and flathead catfish. Washington has not faced the extreme drawdown conditions hitting Southwest states, but the pattern is a reminder that mid-summer heat can compress fishing quality fast. Hatch Magazine published a guide this month on fishing through western drought conditions, covering tactics for warming, dropping water — useful reading for any Columbia Basin angler planning into July and August.

No source in this cycle's angler intel provided comparative year-over-year context specific to Washington rivers or Puget Sound tributaries. WA WDFW's creel interview database remains the most reliable local benchmark — their stocking and catch reports can show whether summer steelhead returns are running ahead of or behind recent averages. Hoot-owl-type restrictions on specific Columbia tributaries to protect trout in warming water are typically a July and August concern; mid-June generally remains within a comfortable window, but conditions can shift quickly and WA WDFW should be checked before any extended trout outing on vulnerable reaches.