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DESCRIPTION:

Latitude 47°41'48.87",   Longitude 114°09'40.67"   NAD83

Lake County, Montana, Hydrologic Unit 17010208

Drainage area: 7,086 square miles

Datum of gage: 2,878.0 feet above   LMSL.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2007-10-01	2026-01-19
Daily Data
Elevation of reservoir water surface above datum, feet	1999-10-01	2026-01-18	9604
Elevation of reservoir water surface above datum, feet	1909-04-06	1999-09-30	24434
Daily Statistics
Elevation of reservoir water surface above datum, feet	1999-10-01	2025-06-12	9384
Monthly Statistics
Elevation of reservoir water surface above datum, feet	1999-10	2025-06
Annual Statistics
Elevation of reservoir water surface above datum, feet	2000	2025
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1969-07-07	1971-06-07	24
Water-Year Summary	2006	2024	19
Revisions	Loading...

OPERATION:

Record for this site is maintained by the USGS Montana Water Science Center

Email questions about this site to Montana Water Science Center Water-Data Inquiries

ADDITIONAL INFORMATION

Reservoir elevation data is collected in local Somers
datum. Somers datum can be converted to NGVD29 by subtracting 1.00
ft.