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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
Physical Daily Values, Unit Values 2001-07-20 2024-11-12
n/a Peak Measurements 2002-03-20 2022-12-23
n/a Site Visits 2001-08-02 2024-08-08
n/a USGS Annual Water Data Reports Site 2006-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 01638420 is associated with a Stream in Loudoun County, Virginia. Current conditions of Discharge and Gage height are available. Water data back to 2001 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
01638420 n/a
Site name
N F CATOCTIN CREEK AT RT 681 NEAR WATERFORD, VA n/a
Site type
Stream
ST
DMS latitude 391218.0 n/a
DMS longitude 0773726.0 n/a
Decimal latitude 39.205 n/a
Decimal longitude -77.62388889 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
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 WATERFORD n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 325.72 feet n/a
Method altitude determined GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System X
Altitude accuracy .13 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
n/a
Flags for instruments at site NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
23.1 square miles 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 NNNNNNNN 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 n/a

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logo for Loudoun County, VA
Loudoun County, VA
logo for USGS - Cooperative Matching Funds
USGS - Cooperative Matching Funds