Flathead Lake at Polson MT - 12371550
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Continuous data
Flathead Lake at Polson MT - 12371550
Subscribe to WaterAlert March 26, 2025 - April 2, 2025
Elevation of reservoir water surface above datum, feet [Somers datum]
2886.67 ft - Apr 02, 2025 02:30:00 PM MDT
Important Data may be provisional
Value
Status
Time
Latest value
2886.67 ft
Provisional
Apr 02, 2025
14:30:00 PM MDT
Selected
2886.67 ft
Provisional
Apr 02, 2025
02:30:00 PM MDT
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Median
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Statistics for April 2, 2025 based on 25 years of data
Elevation of reservoir water surface above datum, ft
low (2008)
2883.22 ft
25th percentile
2883.92 ft
median
2884.63 ft
75th percentile
2885.71 ft
mean
2884.93 ft
high (2005)
2887.91 ft
Available data
Select data types to graph from categories based on the way the data were collected.
Learn about the data collection categories Continuous data
1 data types available - data from 2007-10-01 to 2025-04-02
Continuous data are collected via automated sensors installed at a monitoring location.
Data type
Data date range
Elevation of reservoir water surface above datum, feet [Somers datum]
2007-10-01 - 2025-04-02
Daily data
1 data types available - data from 1909-04-06 to 2025-04-01
Field measurements
0 data types available
Discrete sample data
72 Observed properties (data types) available - with data from 1969-07-07 to 1971-06-07
24 Sampling activities
- Monitoring Location
- Active Monitoring Locations
5 km
3 mi
Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.
Interested in understanding how to access the upstream/downstream data? Learn about the Network-Linked Data Index (NLDI)
| USGS Parameter Group | Data Types | Start Date | End Date |
|---|---|---|---|
| Inorganics, Major, Metals | Water-quality | 1969-07-07 | 1971-04-12 |
| Inorganics, Major, Non-metals | Water-quality | 1969-07-07 | 1971-06-07 |
| Inorganics, Minor, Non-metals | Water-quality | 1969-07-07 | 1971-04-12 |
| Inorganics, Minor, metals | Water-quality | 1969-07-07 | 1971-04-12 |
| Microbiological | Water-quality | 1969-07-07 | 1971-06-07 |
| Nutrient | Water-quality | 1969-07-07 | 1971-06-07 |
| Organics, other | Water-quality | 1969-08-11 | 1971-06-07 |
| Physical | Daily Values, Unit Values, Water-quality | 1909-04-06 | 2025-04-02 |
| n/a | USGS Annual Water Data Reports Site | 2006-01-01 | 2024-01-01 |
Monitoring location 12371550 is associated with a Lake, Reservoir, Impoundment in Lake County, Montana. Current conditions of Elevation of reservoir water surface above datum are available. Water data back to 1909 are available online.
| Metadata Element | Location Metadata | Metadata Code |
|---|---|---|
|
Agency
|
U.S. Geological Survey | USGS |
|
Site identification number
|
12371550 | n/a |
|
Site name
|
Flathead Lake at Polson MT | n/a |
|
Site type
|
Lake, Reservoir, Impoundment
|
LK |
| DMS latitude | 474148.87 | n/a |
| DMS longitude | 1140940.67 | n/a |
| Decimal latitude | 47.6969083 | n/a |
| Decimal longitude | -114.1612972 | n/a |
|
Latitude-longitude method
|
Interpolated from Digital MAP. | N |
|
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
|
Lake County | 047 |
| Country | US | n/a |
| Land net location description | SWSENES04 T22N R20W P | n/a |
| Name of location map | POLSON | n/a |
| Scale of location map | n/a | |
| Altitude of Gage/land surface | 2878.0 feet | n/a |
| Method altitude determined | Level or other surveyed method. | L |
| Altitude accuracy | .1 feet | n/a |
|
Altitude datum
|
Local Mean Sea Level | LMSL |
|
Subbasin hydrologic unit
|
Flathead Lake | 17010208 |
|
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
|
7086 square miles | 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 |
