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

12068020 TAHUYA RIVER ABOVE MOUTH NEAR BELFAIR, WA

Mason County, Washington

Hydrologic Unit Code 17110018

Latitude 47°23'19", Longitude 123°01'05" NAD83

Gage datum 20 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: 2025-09-23 15:26:15 EDT
1.22 1.08 vaww01