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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
Biological Water-quality 1974-04-23 2023-09-27
Information Water-quality 1972-06-05 2023-09-27
Inorganics, Major, Metals Water-quality 1974-06-14 2023-09-27
Inorganics, Major, Non-metals Unit Values, Water-quality 1972-06-05 2023-09-27
Inorganics, Minor, Non-metals Water-quality 1972-06-27 2023-09-27
Inorganics, Minor, metals Water-quality 1972-06-27 2023-09-27
Microbiological Water-quality 1972-06-27 1974-05-21
Nutrient Water-quality 1972-06-05 2023-07-26
Organics, PCBs Water-quality 1972-10-17 1974-05-21
Organics, other Water-quality 1974-06-14 2023-09-27
Organics, pesticide Water-quality 1972-07-24 1974-05-21
Physical Unit Values, Water-quality 1972-06-05 2023-09-27
Radiochemistry Water-quality 1972-07-24 2023-09-27
Water Data for the Nation inventory

Monitoring location 12301919 is associated with a Lake, Reservoir, Impoundment in Lincoln County, Montana. Water data back to 1972 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
12301919 n/a
Site name
Lake Koocanusa at forebay, nr Libby, MT n/a
Site type
Lake, Reservoir, Impoundment
LK
DMS latitude 482450.7 n/a
DMS longitude 1151829.9 n/a
Decimal latitude 48.4140833 n/a
Decimal longitude -115.3083056 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 (Differentially-Corrected GPS). 1
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
Montana 30
State
Montana 30
County
Lincoln County 053
Country US n/a
Land net location description n/a
Name of location map ALEXANDER MOUNTAIN n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 2412 feet n/a
Method altitude determined Interpolated from Digital Elevation Model N
Altitude accuracy 50 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
17010101
Drainage basin
n/a
Topographic setting
Lake or Swamp
L
Flags for instruments at site YNNYNNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
n/a
Contributing drainage area n/a
Time Zone abbreviation MST n/a
Site honors Daylight Saving Time
Y n/a
Data reliability
n/a
Data-other GW files NYNNNNNN 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