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USGS 01645762 S F LITTLE DIFFICULT RUN ABOVE MOUTH NR VIENNA, VA

  Stream Site

DESCRIPTION:
Latitude 38°54'31.6",   Longitude 77°20'18.8"   NAD27
Fairfax County, Virginia, Hydrologic Unit 02070008
Drainage area: 2.71 square miles
Datum of gage: 275.16 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2007-10-01  2016-12-11  
 Daily Data
    Temperature, water, degrees Celsius  2007-10-01  2016-12-09  12856 
    Discharge, cubic feet per second  2007-09-20  2016-12-09  3367 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-10-01  2016-12-09  12524 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011-06-08  2016-12-09  7552 
    pH, water, unfiltered, field, standard units  2007-10-01  2016-12-09  9543 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2007-10-01  2016-12-09  11248 
 Daily Statistics 
    Temperature, water, degrees Celsius  2007-10-01  2015-10-26 2818 
    Discharge, cubic feet per second  2007-09-20  2016-02-01 3057 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-10-01  2015-10-26 2738 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011-06-08  2015-10-26 1497 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2007-10-01  2015-10-26 2448 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2007-10  2015-10  
    Discharge, cubic feet per second  2007-09  2016-02  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-10  2015-10  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011-06  2015-10  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2007-10  2015-10  
 Annual Statistics 
    Temperature, water, degrees Celsius  2008  2016  
    Discharge, cubic feet per second  2007  2016  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2008  2016  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011  2016  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2008  2016  
 Peak streamflow 2008-09-06  2015-06-27  8 
 Field measurements 2007-09-27  2016-11-16  88 
 Field/Lab water-quality samples 2008-04-21  2016-10-26  464 
 Water-Year Summary 2008  2015  8 

Additional Data Sources

Begin Date

End Date

Count
 Instantaneous-Data Archive  **offsite** 2007-09-20  2007-09-30  575 
OPERATION:
Record for this site is maintained by the USGS Virginia Water Science Center
Email questions about this site to Virginia Water Science Center Water-Data Inquiries