Miscellaneous River Product
Issued by NWS Portland, OR

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548
SRUS46 KPQR 311930
RVMPQR

Hydrologic Statement
National Weather Service Portland OR
1230 PM PDT Fri Jul 31 2026

WAZ040-311230-
1230 PM PDT Fri Jul 31 2026

Current status of reservoirs on the Lewis River, updated 1230 PM
Fri, Jul 31 2026.

RESERVOIR        CURRENT POOL ELEV      FULL POOL
Swift Reservoir         974              1000 FT
Yale Lake               473               490 FT
Lake Merwin             234               240 FT

As of 1230 PM PDT, Fri Jul 31, 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

$$