Washington Flow Report


Surface Flows River Levels Reservoirs
March 18 2024

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Washington Flow Report

March 18 2024



Streamflow levels across Washington are currently 79.0% of normal, with the Columbia River Below Priest Rapids Dam reporting the highest discharge in the state with 71200cfs and gauge stage of 11.08 ft. Meanwhile, the Mill Creek At Five Mile Rd Br Nr Walla Walla is seeing a spike in streamflows today after experiencing a 217.0% increase since yesterday, and currently running at 634cfs.

Maximum gauge stage in the state was last observed at the Cowlitz River Near Kosmos, currently reporting a stage of ft. The Duckabush River Near Brinnon in the Hood Canal watershed is surging for this time of year at 689cfs, about 71.97% of normal.


Surface Flow Characteristics


Washington state is characterized by a diverse hydrology that is heavily influenced by its climate and geological features. The state's major surface flows are the Columbia River, Snake River, Yakima River, and Spokane River. These rivers are fed by numerous tributaries and are regulated by large reservoirs such as the Grand Coulee Dam and the Bonneville Dam. The state's mountainous terrain and heavy snowfall create significant watershed systems that contribute to river flow, with the snowpack in the Cascade Range being a primary contributor. Climate patterns such as El Niño and La Niña can impact precipitation rates and snowpack levels, leading to drought or flooding events. Overall, the hydrology of Washington is a complex and dynamic system that is heavily influenced by both natural and human factors.


Streamgauge Profile

Compare conditions across the state


Washington Storm Center

Statewide Warnings & Alerts

Popular Whitewater Destinations

River Run Status Streamflow (CFS) Air Temp (F)
RUNNABLE 390 48
36.25
RUNNABLE 398 52

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