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

454107118271301 UMATILLA RIVER AT BR AT THORNHOLLOW, OR

Umatilla County, Oregon

Hydrologic Unit Code 17070103

Latitude 45°41'07", Longitude 118°27'13" NAD27

Gage datum 1,574 feet above NAVD88

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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: Oregon Water Data Support Team
Page Last Modified: 2025-09-20 16:34:18 EDT
1.45 1.34 vaww02