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USGS 10260855 GRASS VALLEY LK TUNNEL OUTLET A LAKE ARROWHEAD CA

  Facility: Diversion Site

DESCRIPTION:
Latitude 34°15'36",   Longitude 117°12'16"   NAD83
San Bernardino County, California, Hydrologic Unit 18090208
Datum of gage: 5,150 feet above   NGVD29.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2008-10-01  2025-10-29  
 Daily Data
    Discharge, cubic feet per second  2008-10-01  2025-10-27  6226 
 Daily Statistics 
    Discharge, cubic feet per second  2008-10-01  2025-06-17 6104 
 Monthly Statistics 
    Discharge, cubic feet per second  2008-10  2025-06  
 Annual Statistics 
    Discharge, cubic feet per second  2009  2025  
 Peak streamflow 2009-02-06  2024-02-05  16 
 Field measurements 2008-09-18  2025-08-21  157 
 Water-Year Summary 2009  2024  16 
 Revisions  Loading...
OPERATION:
Record for this site is maintained by the USGS California Water Science Center
Email questions about this site to California Water Science Center Water-Data Inquiries