Miscellaneous River Product
Issued by NWS Portland, OR

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557
SRUS46 KPQR 111030
RVMPQR

Hydrologic Statement
National Weather Service Portland OR
330 AM PDT Tue Aug 11 2026

WAZ040-11330-
330 AM PDT Tue Aug 11 2026

Current status of reservoirs on the Lewis River, updated 330 AM
Tue, Aug 11 2026.

RESERVOIR        CURRENT POOL ELEV      FULL POOL
Swift Reservoir         972              1000 FT
Yale Lake               473               490 FT
Lake Merwin             233               240 FT

As of 330 AM PDT, Tue Aug 11, 2026, the remaining aggregate
storage for refill at Merwin, Yale, and Swift reservoirs is
52 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

$$