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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: 190.6 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1990-10-01	2025-11-17
Daily Data
Temperature, water, degrees Celsius	2002-01-17	2025-11-17	10660
Discharge, cubic feet per second	1947-10-01	2025-11-16	28537
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-01-17	2025-11-17	10544
Dissolved oxygen, water, unfiltered, milligrams per liter	2015-02-05	2025-11-17	11501
pH, water, unfiltered, field, standard units	2015-02-05	2025-11-17	11414
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2022-11-18	2025-11-17	3195
Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen	2015-10-08	2025-11-17	9355
Daily Statistics
Discharge, cubic feet per second	1947-10-01	2025-08-19	28448
Monthly Statistics
Discharge, cubic feet per second	1947-10	2025-08
Annual Statistics
Discharge, cubic feet per second	1948	2025
Peak streamflow	1947-06-08	2023-07-05	77
Field measurements	1943-11-25	2025-08-20	747
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1952-11-21	2024-03-07	530
Water-Year Summary	2006	2024	19
Revisions	Loading...

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