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°04'16", Longitude 121°34'44" NAD83

**Period of record**
Begin Date	End Date	Count
2006-08-01	2024-09-05	878

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

Page Contact Information: California Water Data Support Team
Page Last Modified: 2024-11-22 08:38:27 EST
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