SRUS46 KPQR 041830

RVMPQR



Hydrologic Statement 

National Weather Service Portland OR

1130 AM PDT Tue Aug 4 2026



WAZ040-41130-

1130 AM PDT Tue Aug 4 2026



Current status of reservoirs on the Lewis River, updated 1130 AM

Tue, Aug 4 2026.



RESERVOIR        CURRENT POOL ELEV      FULL POOL

Swift Reservoir         974              1000 FT

Yale Lake               473               490 FT

Lake Merwin             234               240 FT



As of 1130 AM PDT, Tue Aug 4, 2026, the remaining aggregate

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

49 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



$$