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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 1994-08-02 2014-07-29
Inorganics, Major, Metals Water-quality 1994-08-02 2014-07-29
Inorganics, Major, Non-metals Water-quality 1994-08-02 2014-07-29
Inorganics, Minor, Non-metals Water-quality 2014-07-29 2014-07-29
Inorganics, Minor, metals Water-quality 1994-08-02 2014-07-29
Microbiological Water-quality 2014-07-29 2014-07-29
Nutrient Water-quality 1994-08-02 2014-07-29
Organics, other Water-quality 1994-08-02 2014-07-29
Organics, pesticide Water-quality 1994-08-02 2014-07-29
Physical Groundwater Levels, Water-quality 1994-08-02 2014-07-29
Radiochemistry Water-quality 1994-08-02 2014-07-29
Stable Isotopes Water-quality 2014-07-29 2014-07-29
Water Data for the Nation inventory

Monitoring location 390946077461001 is associated with a Well in Loudoun County, Virginia. Water data back to 1994 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
390946077461001 n/a
Site name
48X 19 n/a
Site type
Well
GW
DMS latitude 390946.41 n/a
DMS longitude 0774608.7 n/a
Decimal latitude 39.16289167 n/a
Decimal longitude -77.7690833 n/a
Latitude-longitude method
Mapping grade GPS unit (handheld accuracy range 12 to 40 ft) G
Latitude-longitude accuracy
Accurate to + or - .01 sec (Differentially-Corrected GPS). H
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
Maryland 24
State
Virginia 51
County
Loudoun County 107
Country US n/a
Land net location description n/a
Name of location map ROUND HILL n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 669 feet n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy 10 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
Hillside
S
Flags for instruments at site NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
1974 n/a
Date site established or inventoried 19940622 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 YYNNNNNN n/a
National aquifer Piedmont and Blue Ridge crystalline-rock aquifers N400PDMBRX
Local aquifer n/a
Local aquifer type
n/a
Well depth 200 feet n/a
Hole depth
200 feet n/a
Source of depth data Z n/a
Project number 442410200 n/a