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• 31. [Image] Wapato project dam

  	Main dam and central fish ladder at the Wapato project dam
  	Citation × Citation Citation Abstract Copy Title: Wapato project dam Year: 1941 Main dam and central fish ladder at the Wapato project dam Title: Wapato project dam Year: 1941 Main dam and central fish ladder at the Wapato project dam Close

• 32. [Image] Dividing dam and headgates

  	Dividing dam and headgates on New Reservation Ditch (Wapato Project)
  	Citation × Citation Citation Abstract Copy Title: Dividing dam and headgates Year: 1941 Dividing dam and headgates on New Reservation Ditch (Wapato Project) Title: Dividing dam and headgates Year: 1941 Dividing dam and headgates on New Reservation Ditch (Wapato Project) Close

• 33. [Image] Ladder and mill dam

  	Fish ladder and mill dam near Mill City, Oregon, located on the North Santiam River ; 1940-08-11
  	Citation × Citation Citation Abstract Copy Title: Ladder and mill dam Year: 1940 Fish ladder and mill dam near Mill City, Oregon, located on the North Santiam River ; 1940-08-11 Title: Ladder and mill dam Year: 1940 Fish ladder and mill dam near Mill City, Oregon, located on the North Santiam River ; 1940-08-11 Close

• 34. [Image] Left fish ladder

  	Left Ladder (east fishway) at Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Left fish ladder Year: 1939 Left Ladder (east fishway) at Rock Island Dam Title: Left fish ladder Year: 1939 Left Ladder (east fishway) at Rock Island Dam Close

• 35. [Image] Sunnyside dam

  	Sunnyside diversion dam showing central and south fish ladders "Sunnyside Project"
  	Citation × Citation Citation Abstract Copy Title: Sunnyside dam Year: 1941 Sunnyside diversion dam showing central and south fish ladders "Sunnyside Project" Title: Sunnyside dam Year: 1941 Sunnyside diversion dam showing central and south fish ladders "Sunnyside Project" Close

• 36. [Image] Sunnyside dam

  	South fish ladder is covered with screen to prevent Indians from catching fish. Sunnyside Project
  	Citation × Citation Citation Abstract Copy Title: Sunnyside dam Year: 1941 South fish ladder is covered with screen to prevent Indians from catching fish. Sunnyside Project Title: Sunnyside dam Year: 1941 South fish ladder is covered with screen to prevent Indians from catching fish. Sunnyside Project Close

• 37. [Image] Fish ladder and collecting pool

  	Fish ladder and collecting pool, left trap, at the Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Fish ladder and collecting pool Year: 1939 Fish ladder and collecting pool, left trap, at the Rock Island Dam Title: Fish ladder and collecting pool Year: 1939 Fish ladder and collecting pool, left trap, at the Rock Island Dam Close

• 38. [Image] Fish ladder

  	Fish ladder on the Washougal River upper dam
  	Citation × Citation Citation Abstract Copy Title: Fish ladder Year: 1935 Fish ladder on the Washougal River upper dam Title: Fish ladder Year: 1935 Fish ladder on the Washougal River upper dam Close

• 39. [Image] Fish ladders

  	North fish ladder over Sunnyside Dam near the Sunnyside ditch headgates
  	Citation × Citation Citation Abstract Copy Title: Fish ladders Year: 1941 North fish ladder over Sunnyside Dam near the Sunnyside ditch headgates Title: Fish ladders Year: 1941 North fish ladder over Sunnyside Dam near the Sunnyside ditch headgates Close

• 40. [Image] Temporary fish ladder

  	Temporary ladder on the Oregon side of the Bonneville Dam
  	Citation × Citation Citation Abstract Copy Title: Temporary fish ladder Year: 1937 Temporary ladder on the Oregon side of the Bonneville Dam Title: Temporary fish ladder Year: 1937 Temporary ladder on the Oregon side of the Bonneville Dam Close