SRUS46 KPQR 210730

RVMPQR



Hydrologic Statement 

National Weather Service Portland OR

1230 AM PDT Mon Sep 21 2026



WAZ040-211230-

1230 AM PDT Mon Sep 21 2026



Current status of reservoirs on the Lewis River, updated 1230 AM

Mon, Sep 21 2026.



RESERVOIR        CURRENT POOL ELEV      FULL POOL

Swift Reservoir         966              1000 FT

Yale Lake               472               490 FT

Lake Merwin             230               240 FT



As of 1230 AM PDT, Mon Sep 21, 2026, the remaining aggregate

storage for refill at Merwin, Yale, and Swift reservoirs is

62 feet.

 

This product is updated hourly on the NWS Portland webpage at:

www.wrh.noaa.gov/total_forecast/getprod.php?wfo=pqr&sid=PQR&pil=RVM

or 

http://go.usa.gov/x97zc

 

Additional hydrologic information can be viewed at:

water.weather.gov/ahps2/index.php?wfo=pqr



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