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°49'34", Longitude 122°59'45" NAD27

Drainage area 85.5 square miles

Gage datum 302.75 feet above NAVD88

**Period of record**
Begin Date	End Date	Count
1989-06-27	2025-01-10	333

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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: 2025-02-16 11:33:21 EST
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