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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 2008-04-24 2024-02-28
Inorganics, Major, Metals Water-quality 2011-09-19 2022-08-03
Inorganics, Major, Non-metals Water-quality 2008-04-24 2024-02-28
Inorganics, Minor, Non-metals Water-quality 2022-08-03 2022-08-03
Inorganics, Minor, metals Water-quality 2011-09-19 2022-08-03
Nutrient Water-quality 2008-04-24 2023-08-08
Organics, PFAS Water-quality 2022-08-03 2022-08-03
Organics, other Water-quality 2013-05-01 2022-08-03
Organics, pesticide Water-quality 2013-05-01 2022-08-03
Physical Water-quality 2008-04-24 2024-02-28
Radiochemistry Water-quality 2022-08-03 2022-08-03
Sediment Water-quality 2008-04-24 2023-10-10
Stable Isotopes Water-quality 2011-09-19 2016-03-08
n/a Peak Measurements 2008-09-06 2011-09-08
n/a Site Visits 2008-03-27 2024-10-15
n/a USGS Annual Water Data Reports Site 2008-01-01 2012-01-01
Water Data for the Nation inventory

Monitoring location 01645940 is associated with a Stream in Fairfax County, Virginia. Water data back to 2008 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
01645940 n/a
Site name
CAPTAIN HICKORY RUN AT RT 681 NEAR GREAT FALLS, VA n/a
Site type
Stream
ST
DMS latitude 385906.6 n/a
DMS longitude 0771719.1 n/a
Decimal latitude 38.98516667 n/a
Decimal longitude -77.28863889 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
Fairfax County 059
Country US n/a
Land net location description n/a
Name of location map VIENNA n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 220.8 feet n/a
Method altitude determined G n/a
Altitude accuracy .1 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 NNNNNNYNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
1.38 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
Unchecked data. U
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 n/a