US Army Corps of Engineers

Wells Dam

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

Project Description

  • Sub-basin: Middle Columbia
  • Stream: Columbia River
  • Location: Pateros, Washington (RM 515.6)
  • Owner: Douglas County PUD
  • Type of Project: Run-of-river
  • Authorized Purpose: Power
  • Other Uses: Recreation


  • Number of main units = 10
  • Nameplate capacity = 773.3 MW
  • Overload capacity = 840 MW

7 Day Project Status

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