USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

San Joaquin County, California

Hydrologic Unit Code 18040003

Latitude 37°40'34", Longitude 121°15'55" NAD27

Drainage area 13,539 square miles

Gage datum 25 feet above NGVD29

**Period of record**
Begin Date	End Date	Count
1988-09-19	2024-10-03	463

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

Page Contact Information: California Water Data Support Team
Page Last Modified: 2024-11-01 02:24:27 EDT
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