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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  2017-07-26  
 Daily Data
    Temperature, water, degrees Celsius  2007-09-30  2017-07-25  13764 
    Discharge, cubic feet per second  2007-09-20  2017-07-25  3592 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-09-30  2017-07-25  13428 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011-06-08  2017-07-25  8436 
    pH, water, unfiltered, field, standard units  2007-09-30  2017-07-25  10167 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2007-09-30  2017-07-25  12080 
 Daily Statistics 
    Temperature, water, degrees Celsius  2007-09-30  2017-05-01 3262 
    Discharge, cubic feet per second  2007-09-20  2016-10-17 3316 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-09-30  2017-05-01 3179 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011-06-08  2017-05-01 1935 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2007-09-30  2017-05-01 2852 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2007-09  2017-05  
    Discharge, cubic feet per second  2007-09  2016-10  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007-09  2017-05  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011-06  2017-05  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2007-09  2017-05  
 Annual Statistics 
    Temperature, water, degrees Celsius  2007  2017  
    Discharge, cubic feet per second  2007  2017  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2007  2017  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2011  2017  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2007  2017  
 Peak streamflow 2008-09-06  2016-02-24  9 
 Field measurements 2007-09-27  2017-06-08  93 
 Field/Lab water-quality samples 2008-04-21  2017-06-20  496 
 Water-Year Summary 2008  2016  9 

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