SRUS46 KPQR 050430

RVMPQR



Hydrologic Statement 

National Weather Service Portland OR

930 PM PDT Mon May 4 2026



WAZ040-4930-

930 PM PDT Mon May 4 2026



Current status of reservoirs on the Lewis River, updated 930 PM

Mon, May 4 2026.



RESERVOIR        CURRENT POOL ELEV      FULL POOL

Swift Reservoir         998              1000 FT

Yale Lake               477               490 FT

Lake Merwin             237               240 FT



As of 930 PM PDT, Mon May 4, 2026, the remaining aggregate

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

18 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



$$