Miscellaneous River Product
Issued by NWS Portland, OR

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044
SRUS46 KPQR 182030
RVMPQR

Hydrologic Statement
National Weather Service Portland OR
130 PM PDT Fri Sep 18 2026

WAZ040-18130-
130 PM PDT Fri Sep 18 2026

Current status of reservoirs on the Lewis River, updated 130 PM
Fri, Sep 18 2026.

RESERVOIR        CURRENT POOL ELEV      FULL POOL
Swift Reservoir         966              1000 FT
Yale Lake               473               490 FT
Lake Merwin             230               240 FT

As of 130 PM PDT, Fri Sep 18, 2026, the remaining aggregate
storage for refill at Merwin, Yale, and Swift reservoirs is
61 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

$$