| USGS Parameter Group | Data Types | Start Date | End Date |
|---|---|---|---|
| Biological | Water-quality | 2014-06-27 | 2014-06-27 |
| Information | Water-quality | 2011-07-13 | 2024-03-07 |
| Inorganics, Major, Metals | Water-quality | 1945-04-03 | 2023-11-08 |
| Inorganics, Major, Non-metals | Daily Values, Unit Values, Water-quality | 1945-04-03 | 2024-12-26 |
| Inorganics, Minor, Non-metals | Water-quality | 2014-06-27 | 2014-06-27 |
| Inorganics, Minor, metals | Water-quality | 1945-04-03 | 2019-09-11 |
| Microbiological | Water-quality | 2013-01-10 | 2023-11-08 |
| Nutrient | Daily Values, Unit Values, Water-quality | 1945-04-03 | 2024-12-26 |
| Organics, other | Water-quality | 2014-04-07 | 2014-07-02 |
| Organics, pesticide | Water-quality | 2014-04-07 | 2014-07-02 |
| Physical | Daily Values, Unit Values, Water-quality | 1935-04-01 | 2024-12-26 |
| Radiochemistry | Water-quality | 2014-06-27 | 2014-06-27 |
| Sediment | Water-quality | 2011-07-13 | 2023-11-08 |
| Stable Isotopes | Water-quality | 2011-09-14 | 2018-09-28 |
| n/a | Peak Measurements | 1935-09-06 | 2022-12-23 |
| n/a | Site Visits | 1935-02-12 | 2024-10-15 |
| n/a | USGS Annual Water Data Reports Site | 2006-01-01 | 2024-01-01 |
Monitoring location 01646000 is associated with a Stream in Fairfax County, Virginia. Current conditions of Discharge, Dissolved oxygen, Gage height, and more are available. Water data back to 1935 are available online.
| Metadata Element | Location Metadata | Metadata Code |
|---|---|---|
|
Agency
|
U.S. Geological Survey | USGS |
|
Site identification number
|
01646000 | n/a |
|
Site name
|
DIFFICULT RUN NEAR GREAT FALLS, VA | n/a |
|
Site type
|
Stream
|
ST |
| DMS latitude | 385833 | n/a |
| DMS longitude | 0771446 | n/a |
| Decimal latitude | 38.97594346 | n/a |
| Decimal longitude | -77.24581439 | n/a |
|
Latitude-longitude method
|
Interpolated from MAP. | M |
|
Latitude-longitude accuracy
|
Unknown or unspecified. | U |
|
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
|
Fairfax County | 059 |
| Country | US | n/a |
| Land net location description | n/a | |
| Name of location map | FALLS CHURCH | n/a |
| Scale of location map | 24000 | n/a |
| Altitude of Gage/land surface | 150.94 feet | n/a |
| Method altitude determined | GNSS3 - Level 3 Quality Survey Grade Global Navigation Satellite System | Y |
| 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 | 19901213 | n/a |
|
Drainage area
|
57.8 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 |
