USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

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San Bernardino County, California

Hydrologic Unit Code 18090208

Latitude 34°15'49", Longitude 117°13'05" NAD83

Drainage area 2.59 square miles

Gage datum 5,130.00 feet above NGVD29

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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: 2025-12-14 08:41:13 EST
1.18 1.06 sdww01

10260865 GRASS VALLEY C BL GRASS VLY LK NR LK ARROWHEAD CA