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

11176325 ARROYO MOCHO A HOPYARD RD A PLEASANTON CA

Alameda County, California

Hydrologic Unit Code 18050004

Latitude 37°40'49", Longitude 121°54'10" NAD27

Gage datum 310 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: California Water Data Support Team
Page Last Modified: 2025-09-04 00:52:05 EDT
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