USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Contra Costa County, California

Hydrologic Unit Code 18040003

Latitude 38°03'08", Longitude 121°41'16" NAD27

Gage datum 0 feet above NAVD88

**Period of record**
Begin Date	End Date	Count
1995-01-19	2024-06-11	1798

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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: 2024-12-02 07:04:04 EST
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