Chief Joseph Dam and Rufus Woods Lake


Provisional Data Warning
Hydrologic Data: [Hourly] [8 Days Hourly] [Daily] [Prior Month] [Query]
Water Quality Data: [High 12-hour Avg TDG] [Total Spill] [TDG csv] [Forebay] [Tailwater]
Power: [Monthly Power Report]

Project Description

  • Sub-basin: Middle Columbia
  • Stream: Columbia River
  • Location: Bridgeport, Washington
  • Owner: Corps of Engineers, Seattle District
  • Type of Project: Run-of-river
  • Authorized Purpose: Power
  • Other Uses: Irrigation, Recreation, Water Quality

Hydrologic Data

  • Drainage area = 75,000 sq mi
  • Maximum historical peak discharge = 725,000 cfs (1894)
  • Maximum rate of change = No limit
  • Lake Elevation (NGVD29)
    Maximum pool = 958.8 ft
    Full pool = 956.0 ft
    Minimum pool = 930.0 ft
  • Reservoir gross capacity (Elev. 946.0) = 518,000 AF

Powerhouse

  • Number of main units = 27
  • Nameplate capacity = 2,069 MW
  • Overload capacity = 2,614 MW
  • Station service units = 6 MW
  • Hydraulic capacity = 219,000 cfs

7 Day Project Status

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