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2 data types available - data from 2008-03-27 to 2025-11-17

68 Observed properties (data types) available - with data from 2008-04-24 to 2026-07-07

230 Sampling activities

2 data types available - with data from 2009-05-26 to 2011-09-08

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01645844	n/a
Location name	OLD COURTHOUSE SPRING BRANCH NEAR VIENNA, VA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	38.9390277777778	n/a
Decimal longitude (WGS84)	-77.2576388888889	n/a
Latitude-longitude method	Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)	G
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Virginia	51
State	Virginia	51
County	Fairfax County	059
Country	United States of America	n/a
Altitude of gage/land surface	275.2 feet	n/a
Method altitude determined	Global Positioning System.	G
Altitude accuracy	0.1 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Middle Potomac-Catoctin	02070008
Drainage basin		n/a
Date of first construction		n/a
Drainage area	1.45 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	EST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a

Monitoring location Old Courthouse Spring Branch Near Vienna, VA - USGS-01645844