Miscellaneous River Product
Issued by NWS Portland, OR

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234
SRUS46 KPQR 102130
RVMPQR

Hydrologic Statement
National Weather Service Portland OR
230 PM PDT Thu Sep 10 2026

WAZ040-10230-
230 PM PDT Thu Sep 10 2026

Current status of reservoirs on the Lewis River, updated 230 PM
Thu, Sep 10 2026.

RESERVOIR        CURRENT POOL ELEV      FULL POOL
Swift Reservoir         966              1000 FT
Yale Lake               473               490 FT
Lake Merwin             232               240 FT

As of 230 PM PDT, Thu Sep 10, 2026, the remaining aggregate
storage for refill at Merwin, Yale, and Swift reservoirs is
59 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

$$