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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.
Important Inventory Page

USGS Parameter Group Data Types Start Date End Date
Information Water-quality 2009-02-11 2009-02-11
Inorganics, Major, Non-metals Water-quality 2009-02-11 2009-02-11
Physical Water-quality 2009-02-11 2009-02-11
Water Data for the Nation inventory

Monitoring location 383745077115601 is associated with a Lake, Reservoir, Impoundment in Fairfax County, Virginia. Water data back to 2009 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
383745077115601 n/a
Site name
HOLLY POND MASON NECK NWR NR WOODBRIDGE, VA n/a
Site type
Lake, Reservoir, Impoundment
LK
DMS latitude 383745.5 n/a
DMS longitude 0771156.9 n/a
Decimal latitude 38.62930556 n/a
Decimal longitude -77.19913889 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 (Differentially-Corrected GPS). 1
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
Georgia 13
State
Virginia 51
County
Fairfax County 059
Country US n/a
Land net location description n/a
Name of location map FORT BELVOIR, VAMD n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 5 feet n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy 5 feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
Middle Potomac-Anacostia-Occoquan 02070010
Drainage basin
n/a
Topographic setting
Lake or Swamp
L
Flags for instruments at site NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 20090401 n/a
Drainage area
n/a
Contributing drainage area n/a
Time Zone abbreviation EST n/a
Site honors Daylight Saving Time
Y n/a
Data reliability
n/a
Data-other GW files 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
Project number 2503CWZU0 n/a