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USGS 01645704 DIFFICULT RUN ABOVE FOX LAKE NEAR FAIRFAX, VA

  Stream Site

DESCRIPTION:
Latitude 38°53'04.5",   Longitude 77°19'57.8"   NAD27
Fairfax County, Virginia, Hydrologic Unit 02070008
Drainage area: 5.49 square miles
Datum of gage: 296.4 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2007-10-01  2016-09-29  
 Daily Data
    Temperature, water, degrees Celsius  2007-10-01  2016-09-28  12808 
    Discharge, cubic feet per second  2007-09-21  2016-09-28  3296 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-10-01  2016-09-28  12600 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-05-20  2016-09-28  9896 
    pH, water, unfiltered, field, standard units  2007-10-01  2016-09-28  9489 
    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  2016-09-28  11156 
 Daily Statistics 
    Temperature, water, degrees Celsius  2007-10-01  2015-10-25 2873 
    Discharge, cubic feet per second  2007-09-21  2016-04-26 3141 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-10-01  2015-10-25 2823 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-05-20  2015-10-25 2154 
    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  2015-10-25 2472 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2007-10  2015-10  
    Discharge, cubic feet per second  2007-09  2016-04  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-10  2015-10  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-05  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  2009  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  2016-08-22  85 
 Field/Lab water-quality samples 2008-04-03  2016-09-13  442 
 Water-Year Summary 2008  2015  8 

Additional Data Sources

Begin Date

End Date

Count
 Instantaneous-Data Archive  **offsite** 2007-09-21  2007-09-30  960 
OPERATION:
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