USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Sonoma County, California

Hydrologic Unit Code 18010110

Latitude 38°29'39", Longitude 122°51'08" NAD27

Drainage area 251 square miles

Gage datum 50 feet above NAVD88

**Period of record**
Begin Date	End Date	Count
2005-10-07	2024-11-21	194

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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: 2024-11-24 00:50:00 EST
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