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DESCRIPTION:

Latitude 38°48'46",   Longitude 77°13'43"   NAD27

Fairfax County, Virginia, Hydrologic Unit 02070010

Drainage area: 23.9 square miles

Datum of gage: 191.24 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1990-10-01	2017-10-23
Daily Data
Temperature, water, degrees Celsius	2002-01-17	2017-10-22	5706
Discharge, cubic feet per second	1947-10-01	2017-10-22	25590
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-01-17	2017-10-22	5583
Dissolved oxygen, water, unfiltered, milligrams per liter	2015-02-05	2017-10-22	3832
pH, water, unfiltered, field, standard units	2015-02-05	2017-10-22	2820
Daily Statistics
Temperature, water, degrees Celsius	2002-01-17	2017-09-07	1856
Discharge, cubic feet per second	1947-10-01	2016-10-16	25219
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-01-17	2017-09-07	1815
Dissolved oxygen, water, unfiltered, milligrams per liter	2015-02-05	2017-09-07	912
Monthly Statistics
Temperature, water, degrees Celsius	2002-01	2017-09
Discharge, cubic feet per second	1947-10	2016-10
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-01	2017-09
Dissolved oxygen, water, unfiltered, milligrams per liter	2015-02	2017-09
Annual Statistics
Temperature, water, degrees Celsius	2002	2017
Discharge, cubic feet per second	1948	2017
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002	2017
Dissolved oxygen, water, unfiltered, milligrams per liter	2015	2017
Peak streamflow	1947-06-08	2016-02-24	70
Field measurements	1943-11-25	2017-10-04	701
Field/Lab water-quality samples	1952-11-21	2017-09-13	403
Water-Year Summary	2006	2016	11

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