427 

SRUS46 KPQR 200230

RVMPQR



Hydrologic Statement 

National Weather Service Portland OR

730 PM PDT Tue May 19 2026



WAZ040-19730-

730 PM PDT Tue May 19 2026



Current status of reservoirs on the Lewis River, updated 730 PM

Tue, May 19 2026.



RESERVOIR        CURRENT POOL ELEV      FULL POOL

Swift Reservoir         996              1000 FT

Yale Lake               479               490 FT

Lake Merwin             236               240 FT



As of 730 PM PDT, Tue May 19, 2026, the remaining aggregate

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

19 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



$$