US Army Corps of Engineers

Libby Dam and Lake Koocanusa

Provisional Data Warning
Hydrologic Data: [Hourly] [8 Days Hourly] [Daily] [Prior Month] [Query]
Water Quality Data: [TDG csv]
Water Quality Data: [Forebay] [Storage] [Inflow] [Outflow]
Power: [Monthly Power Report]
Libby Dam 2 Libby Dam 1

Project Description

  • Sub-basin: Upper Columbia
  • Stream: Kootenai River
  • Location: Libby, Montana
  • Owner: Corps of Engineers, Seattle District
  • Type of Project: Storage
  • Authorized Purpose: Flood Control, Power
  • Other Uses: Fishery, Recreation

Hydrologic Data

  • Drainage area = 8,985 sq mi
  • Maximum historical peak discharge = 130,000 cfs (1894)
  • Lake Elevation (NGVD29)
    Maximum pool = 2,459.0 ft
    Full pool = 2,459.0 ft
    Minimum pool = 2,287.0 ft
  • Usable Storage (2,287.0 to 2,459.0) = 4,979,500 AF

Powerhouse

  • Number of units = 5
  • Nameplate capacity = 525 MW
  • Overload capacity = 604 MW
  • Hydraulic capacity = 24,100 cfs

7 Day Project Status

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U.S. Army Corps of Engineers, Columbia Basin Water Management Division
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