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USGS 11526500 NF TRINITY R A HELENA CA

  Stream Site

DESCRIPTION:
Latitude 40°46'55",   Longitude 123°07'38"   NAD27
Trinity County, California, Hydrologic Unit 18010211
Drainage area: 151 square miles
Datum of gage: 1,460.00 feet above   NGVD29.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2007-10-01  2016-09-30  
 Daily Data
    Temperature, water, degrees Celsius  1962-10-19  1963-08-30  84 
    Discharge, cubic feet per second  1911-10-01  2016-09-29  11611 
    Suspended sediment concentration, milligrams per liter  1962-11-01  1963-04-29  77 
    Suspended sediment discharge, short tons per day  1962-11-01  1963-04-30  181 
 Daily Statistics 
    Discharge, cubic feet per second  1911-10-01  2015-10-31 11347 
    Suspended sediment concentration, milligrams per liter  1962-11-01  1963-04-29 77 
    Suspended sediment discharge, short tons per day  1962-11-01  1963-04-30 181 
 Monthly Statistics 
    Discharge, cubic feet per second  1911-10  2015-10  
    Suspended sediment concentration, milligrams per liter  1962-11  1963-04  
    Suspended sediment discharge, short tons per day  1962-11  1963-04  
 Annual Statistics 
    Discharge, cubic feet per second  1912  2016  
    Suspended sediment concentration, milligrams per liter  1963  1963  
    Suspended sediment discharge, short tons per day  1963  1963  
 Peak streamflow 1912-01-25  1980-01-14  26 
 Field measurements 2004-10-14  2016-09-29  80 
 Field/Lab water-quality samples 1962-10-19  1970-07-30  492 
 Water-Year Summary 2005  2015  10 

Additional Data Sources

Begin Date

End Date

Count
 Instantaneous-Data Archive  **offsite** 2004-10-01  2007-09-30  48628 
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