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DESCRIPTION:

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

Fairfax County, Virginia, Hydrologic Unit 020700100402

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)	2025-08-27	2025-08-28
Daily Data
Temperature, water, degrees Celsius	2002-01-17	2025-08-27	10365
Discharge, cubic feet per second	2025-07-28	2025-08-27	29
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2023-01-10	2025-08-27	2299
Dissolved oxygen, water, unfiltered, milligrams per liter	2023-10-23	2025-08-28	2027
pH, water, unfiltered, field, standard units	2023-10-23	2025-08-28	2020
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2023-01-10	2025-08-27	2790
Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen	2023-10-23	2025-08-27	1763
Field measurements	1943-11-25	2025-06-04	746
Water-Year Summary	2006	2024	18
Revisions	Loading...

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