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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 2007-12-10 2007-12-10
Inorganics, Major, Metals Water-quality 2007-12-10 2007-12-10
Inorganics, Major, Non-metals Water-quality 2007-12-10 2007-12-10
Inorganics, Minor, metals Water-quality 2007-12-10 2007-12-10
Nutrient Water-quality 2007-12-10 2007-12-10
Physical Water-quality 2007-12-10 2007-12-10
Water Data for the Nation inventory

Monitoring location 01646562 is associated with an Outfall in Montgomery County, Maryland. Water data back to 2007 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
01646562 n/a
Site name
DALECARLIA/POTOMAC R WATER INTAKE NEAR BETHESDA MD n/a
Site type
Outfall
FA-OF
DMS latitude 385643 n/a
DMS longitude 0770655 n/a
Decimal latitude 38.94527778 n/a
Decimal longitude -77.11527778 n/a
Latitude-longitude method
Interpolated from MAP. M
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
Maryland 24
State
Maryland 24
County
Montgomery County 031
Country US n/a
Land net location description n/a
Name of location map WASHINGTON WEST n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 145 feet n/a
Method altitude determined Interpolated from Digital Elevation Model N
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
n/a
Flags for instruments at site NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 20071210 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
n/a
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 2427CE520 n/a