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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 Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Information Water-quality 1970-02-02 1972-04-05
Inorganics, Major, Metals Water-quality 1970-02-02 1972-04-05
Inorganics, Major, Non-metals Water-quality 1970-02-02 1972-04-05
Inorganics, Minor, metals Water-quality 1970-02-02 1972-04-05
Nutrient Water-quality 1970-02-02 1972-04-05
Physical Daily Values, Groundwater Levels, Unit Values, Water-quality 1963-11-19 2024-11-24
n/a USGS Active Groundwater Level Network Site 1963-01-01 2021-01-01
n/a USGS Annual Water Data Reports Site 2006-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 391542077423801 is associated with a Well in Loudoun County, Virginia. Current conditions of Depth to water level are available. Water data back to 1963 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
391542077423801 n/a
Site name
49Y 1 SOW 022 n/a
Site type
Well
GW
DMS latitude 391542 n/a
DMS longitude 0774238 n/a
Decimal latitude 39.26176825 n/a
Decimal longitude -77.7102699 n/a
Latitude-longitude method
Interpolated from MAP. M
Latitude-longitude accuracy
Accurate to + or - 1 min. M
Latitude-longitude datum
North American Datum of 1927 NAD27
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 HARPERS FERRY n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 1062.24 feet n/a
Method altitude determined G n/a
Altitude accuracy .01 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
Middle Potomac-Catoctin 02070008
Drainage basin
n/a
Topographic setting
Hillside
S
Flags for instruments at site NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 19901213 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
Location not accurate. L
Data-other GW files YNNNNYYN n/a
National aquifer Piedmont and Blue Ridge crystalline-rock aquifers N400PDMBRX
Local aquifer Precambrian Erathem 400PCMB
Local aquifer type
Unconfined single aquifer U
Well depth 516 feet n/a
Hole depth
n/a
Source of depth data D n/a
Project number OBS-M3V n/a

Operated in cooperation with:

logo for USGS - Cooperative Matching Funds
USGS - Cooperative Matching Funds
logo for Virginia Department of Environmental Quality
Virginia Department of Environmental Quality