Foster Dam and Lake

Project Description

• Sub-basin: Middle Willamette
• Stream: South Santiam River
• Location: Foster, Oregon
• Owner: Corps of Engineers, Portland District
• Type of Project: Storage
• Authorized Purpose: Flood Control, Power, Navigation, Irrigation
• Other Uses: Fishery, Water Quality, Recreation

Hydrologic Data

• Drainage area = 494 sq mi
• Maximum discharge = 99,500 cfs (1964)
• Lake Elevation
       Maximum pool = 641.0 ft
       Full pool = 641.0 ft
       Minimum conservation pool = 613.0 ft
• Usable Storage (609.0 to 637.0) = 28,300 AF

Powerhouse

• Number of units.................................2
• Nameplate capacity...........................20.0 MW
• Overload capacity.............................23.0 MW
• Hydraulic capacity.............................3,200 cfs