Agency
U.S. Geological Survey
USGS
Site identification number
390359077253301
n/a
Site name
51W 25
n/a
Site type
Well
GW
DMS latitude
390359.34
n/a
DMS longitude
0772532.83
n/a
Decimal latitude
39.0664833
n/a
Decimal longitude
-77.4257861
n/a
Latitude-longitude method
Differentially corrected Global Positioning System.
D
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
Virginia
51
State
Virginia
51
County
Loudoun County
107
Country
US
n/a
Land net location description
n/a
Name of location map
STERLING
n/a
Scale of location map
24000
n/a
Altitude of Gage/land surface
211.25
feet
n/a
Method altitude determined
Differentially corrected Global Positioning System.
D
Altitude accuracy
.1
feet
n/a
Altitude datum
National Geodetic Vertical Datum of 1929
NGVD29
Subbasin hydrologic unit
Middle Potomac-Catoctin
02070008
Drainage basin
n/a
Topographic setting
Hilltop
H
Flags for instruments at site
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
n/a
Date of first construction
20101019
n/a
Date site established or inventoried
20180517
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
Data have been checked by the reporting agency.
C
Data-other GW files
Y Y
n/a
National aquifer
Piedmont and Blue Ridge crystalline-rock aquifers
N400PDMBRX
Local aquifer
Newark Group
231NWRK
Local aquifer type
Mixed (confined and unconfined) multiple aquifers
X
Well depth
500
feet
n/a
Hole depth
500
feet
n/a
Source of depth data
S
n/a
Project number
n/a
