Columbia River at Wanapum Dam (outflow), WA

KITTITAS COUNTY, WA46.8747°N, -119.9714°W Updated 1 hr ago

FLOW RATE

39,800cfs

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

39,800cfs

Optimal band: 46,325–62,675 cfs

PERIOD HIGH

92,600cfs

PERIOD LOW

25,900cfs

RUNNABLE

25%

last 1 day in band

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46.8747, -119.9714

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DATA · USACE · NOAA · NWSUPDATED 2026-09-20 07:00 UTC

Site #nwdp:WAN.Flow-Out.Ave.1Hour.1Hour.CBT-REV·USACE

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