USGS Surface Water for USA: Streamflow Measurements

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Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Streamflow Measurements for the Nation

12472520 RED ROCK COULEE NEAR SMYRNA, WA

Grant County, Washington

Hydrologic Unit Code 17020015

Latitude 46°51'20", Longitude 119°35'48" NAD27

Drainage area 19 square miles

Contributing drainage area 19 square miles

Gage datum 580 feet above NGVD29

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U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Streamflow Measurements
URL: https://waterdata.usgs.gov/nwis/measurements?

Page Contact Information: Washington Water Data Support Team
Page Last Modified: 2025-09-06 21:19:24 EDT
1.23 1.1 vaww02