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• 1. [Image] Lewiston Dam weir

  	Citation × Citation Citation Abstract Copy Title: Lewiston Dam weir Year: 1938 Title: Lewiston Dam weir Year: 1938 Close

• 2. [Image] Idaho Power diversion dam

  	Idaho Power Company's diversion dam (power) on Lemhi River at Salmon, Idaho
  	Citation × Citation Citation Abstract Copy Title: Idaho Power diversion dam Year: 1941 Idaho Power Company's diversion dam (power) on Lemhi River at Salmon, Idaho Title: Idaho Power diversion dam Year: 1941 Idaho Power Company's diversion dam (power) on Lemhi River at Salmon, Idaho Close

• 3. [Image] Lewiston Dam weir

  	Citation × Citation Citation Abstract Copy Title: Lewiston Dam weir Year: 1938 Title: Lewiston Dam weir Year: 1938 Close

• 4. [Image] Wallowa Lake dam

  	Upstream face of control dam at outlet of Wallowa Lake Oregon
  	Citation × Citation Citation Abstract Copy Title: Wallowa Lake dam Year: 1936 Upstream face of control dam at outlet of Wallowa Lake Oregon Title: Wallowa Lake dam Year: 1936 Upstream face of control dam at outlet of Wallowa Lake Oregon Close

• 5. [Image] East fishway and collecting pool

  	Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: East fishway and collecting pool Year: 1939 Rock Island Dam Title: East fishway and collecting pool Year: 1939 Rock Island Dam Close

• 6. [Image] Loading fish at central trap

  	Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Loading fish at central trap Year: 1940 Rock Island Dam Title: Loading fish at central trap Year: 1940 Rock Island Dam Close

• 7. [Image] Dam on Milton Creek near St Helens, Oregon

  	Citation × Citation Citation Abstract Copy Title: Dam on Milton Creek near St Helens, Oregon Year: 1946 Title: Dam on Milton Creek near St Helens, Oregon Year: 1946 Close

• 8. [Image] Dam on Milton Creek near St Helens, Oregon

  	Citation × Citation Citation Abstract Copy Title: Dam on Milton Creek near St Helens, Oregon Year: 1946 Title: Dam on Milton Creek near St Helens, Oregon Year: 1946 Close

• 9. [Image] Dam on Milton Creek near St Helens, Oregon

  	Citation × Citation Citation Abstract Copy Title: Dam on Milton Creek near St Helens, Oregon Year: 1946 Title: Dam on Milton Creek near St Helens, Oregon Year: 1946 Close

• 10. [Image] Union Gap rotary screens

  	Rotary screens on the Union Gap Ditch a short distance below the Rosa by-pass. Union Gap Diversion
  	Citation × Citation Citation Abstract Copy Title: Union Gap rotary screens Year: 1941 Rotary screens on the Union Gap Ditch a short distance below the Rosa by-pass. Union Gap Diversion Title: Union Gap rotary screens Year: 1941 Rotary screens on the Union Gap Ditch a short distance below the Rosa by-pass. Union Gap Diversion Close

• 11. [Image] Chinooks jumping over middle rocks

  	Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Chinooks jumping over middle rocks Year: 1939 Rock Island Dam Title: Chinooks jumping over middle rocks Year: 1939 Rock Island Dam Close

• 12. [Image] Chinook on rock

  	Chinook on rock left of middle ladder at the Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Chinook on rock Year: 1939 Chinook on rock left of middle ladder at the Rock Island Dam Title: Chinook on rock Year: 1939 Chinook on rock left of middle ladder at the Rock Island Dam Close

• 13. [Image] Abandoned dam

  	Abandoned dam on the Coast Fork Willamette River; 1938-06-20
  	Citation × Citation Citation Abstract Copy Title: Abandoned dam Year: 1938 Abandoned dam on the Coast Fork Willamette River; 1938-06-20 Title: Abandoned dam Year: 1938 Abandoned dam on the Coast Fork Willamette River; 1938-06-20 Close

• 14. [Image] Dam near Cottage Grove

  	Dam near Cottage Grove, Oregon, on the Coast Fork Willamette River;1938-06-20
  	Citation × Citation Citation Abstract Copy Title: Dam near Cottage Grove Year: 1938 Dam near Cottage Grove, Oregon, on the Coast Fork Willamette River;1938-06-20 Title: Dam near Cottage Grove Year: 1938 Dam near Cottage Grove, Oregon, on the Coast Fork Willamette River;1938-06-20 Close

• 15. [Image] Dam on Roaring Creek

  	Citation × Citation Citation Abstract Copy Title: Dam on Roaring Creek Year: 1940 Title: Dam on Roaring Creek Year: 1940 Close

• 16. [Image] Obstruction on Coast Fork Willamette

  	Obstruction on Coast Fork Willamette River Ladder has broken down;1938-06
  	Citation × Citation Citation Abstract Copy Title: Obstruction on Coast Fork Willamette Year: 1938 Obstruction on Coast Fork Willamette River Ladder has broken down;1938-06 Title: Obstruction on Coast Fork Willamette Year: 1938 Obstruction on Coast Fork Willamette River Ladder has broken down;1938-06 Close

• 17. [Image] Salem Ditch dam

  	Dam in Salem Ditch which is part of the North Santiam River system;1940-08-09
  	Citation × Citation Citation Abstract Copy Title: Salem Ditch dam Year: 1940 Dam in Salem Ditch which is part of the North Santiam River system;1940-08-09 Title: Salem Ditch dam Year: 1940 Dam in Salem Ditch which is part of the North Santiam River system;1940-08-09 Close

• 18. [Image] Dam site above Mayflower Creek

  	Dam site above Mayflower Creek on the North Santiam River in Oregon; 1940-08-12
  	Citation × Citation Citation Abstract Copy Title: Dam site above Mayflower Creek Year: 1940 Dam site above Mayflower Creek on the North Santiam River in Oregon; 1940-08-12 Title: Dam site above Mayflower Creek Year: 1940 Dam site above Mayflower Creek on the North Santiam River in Oregon; 1940-08-12 Close

• 19. [Image] Salmon entering elevator from brail

  	Rock Island Dam left trap in the summer
  	Citation × Citation Citation Abstract Copy Title: Salmon entering elevator from brail Year: 1939 Rock Island Dam left trap in the summer Title: Salmon entering elevator from brail Year: 1939 Rock Island Dam left trap in the summer Close

• 20. [Image] Dam site above Mayflower Creek

  	Dam site above Mayflower Creek on the North Santiam River in Oregon; 1940-08-12
  	Citation × Citation Citation Abstract Copy Title: Dam site above Mayflower Creek Year: 1940 Dam site above Mayflower Creek on the North Santiam River in Oregon; 1940-08-12 Title: Dam site above Mayflower Creek Year: 1940 Dam site above Mayflower Creek on the North Santiam River in Oregon; 1940-08-12 Close

• 21. [Image] Foot of Cazadero Dam

  	Chinook salmon at foot of Cazadero Dam on Clackamas River; 1940-08-23
  	Citation × Citation Citation Abstract Copy Title: Foot of Cazadero Dam Year: 1940 Chinook salmon at foot of Cazadero Dam on Clackamas River; 1940-08-23 Title: Foot of Cazadero Dam Year: 1940 Chinook salmon at foot of Cazadero Dam on Clackamas River; 1940-08-23 Close

• 22. [Image] Mill Creek mill dam

  	Mill Creek mill dam Mill Creek is a tributary to the Mohawk River;1938-06-20
  	Citation × Citation Citation Abstract Copy Title: Mill Creek mill dam Year: 1938 Mill Creek mill dam Mill Creek is a tributary to the Mohawk River;1938-06-20 Title: Mill Creek mill dam Year: 1938 Mill Creek mill dam Mill Creek is a tributary to the Mohawk River;1938-06-20 Close

• 23. [Image] Chinook jumping

  	Chinook jumping over middle rocks at the Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Chinook jumping Year: 1939 Chinook jumping over middle rocks at the Rock Island Dam Title: Chinook jumping Year: 1939 Chinook jumping over middle rocks at the Rock Island Dam Close

• 24. [Image] Chinook jumping rock

  	Chinook jumping rock left of middle ladder at the Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Chinook jumping rock Year: 1939 Chinook jumping rock left of middle ladder at the Rock Island Dam Title: Chinook jumping rock Year: 1939 Chinook jumping rock left of middle ladder at the Rock Island Dam Close

• 25. [Image] Chinook jumping rock

  	Chinook jumping rock left of middle ladder at the Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Chinook jumping rock Year: 1939 Chinook jumping rock left of middle ladder at the Rock Island Dam Title: Chinook jumping rock Year: 1939 Chinook jumping rock left of middle ladder at the Rock Island Dam Close

• 26. [Image] Lower Benson Dam near US 30 bridge between Union and La Grande

  	Lower Benson Dam on Catherine Creek near US 30 bridge between Union and La Grande, Oregon. Photo shows low water barrier
  	Citation × Citation Citation Abstract Copy Title: Lower Benson Dam near US 30 bridge between Union and La Grande Year: 1941 Lower Benson Dam on Catherine Creek near US 30 bridge between Union and La Grande, Oregon. Photo shows low water barrier Title: Lower Benson Dam near US 30 bridge between Union and La Grande Year: 1941 Lower Benson Dam on Catherine Creek near US 30 bridge between Union and La Grande, Oregon. Photo shows low water barrier Close

• 27. [Image] Cedar Creek Falls

  	Birdseye view of Cedar Creek falls and small power developement
  	Citation × Citation Citation Abstract Copy Title: Cedar Creek Falls Year: 1937 Birdseye view of Cedar Creek falls and small power developement Title: Cedar Creek Falls Year: 1937 Birdseye view of Cedar Creek falls and small power developement Close

• 28. [Image] Upstream view of Rosa Dam

  	Upstream view of "grizzly" and ditch takeoff
  	Citation × Citation Citation Abstract Copy Title: Upstream view of Rosa Dam Year: 1941 Upstream view of "grizzly" and ditch takeoff Title: Upstream view of Rosa Dam Year: 1941 Upstream view of "grizzly" and ditch takeoff Close

• 29. [Image] Fish ladder

  	Clearwater dam ladder located near Lewiston, Idaho
  	Citation × Citation Citation Abstract Copy Title: Fish ladder Year: 1937 Clearwater dam ladder located near Lewiston, Idaho Title: Fish ladder Year: 1937 Clearwater dam ladder located near Lewiston, Idaho Close

• 30. [Image] Diversion dam near Prineville, Oregon

  	Crooked River diversion dam
  	Citation × Citation Citation Abstract Copy Title: Diversion dam near Prineville, Oregon Year: 1942 Crooked River diversion dam Title: Diversion dam near Prineville, Oregon Year: 1942 Crooked River diversion dam Close

• 31. [Image] Spillway and dam on Clearwater River

  	Lewiston Dam on the Clearwater River near Lewiston, Idaho
  	Citation × Citation Citation Abstract Copy Title: Spillway and dam on Clearwater River Year: 1936 Lewiston Dam on the Clearwater River near Lewiston, Idaho Title: Spillway and dam on Clearwater River Year: 1936 Lewiston Dam on the Clearwater River near Lewiston, Idaho Close

• 32. [Image] Lewiston Dam ladder and spillway

  	Washington Water Power dam on the Clearwater River in Idaho
  	Citation × Citation Citation Abstract Copy Title: Lewiston Dam ladder and spillway Year: 1937 Washington Water Power dam on the Clearwater River in Idaho Title: Lewiston Dam ladder and spillway Year: 1937 Washington Water Power dam on the Clearwater River in Idaho Close

• 33. [Image] Headgates

  	Last headgates in Albany Power Ditch just before it enters Crown Willamette Paper Company property near Lebanon, Oregon; 1940-08-14 From Album 1 page 9
  	Citation × Citation Citation Abstract Copy Title: Headgates Year: 1940 Last headgates in Albany Power Ditch just before it enters Crown Willamette Paper Company property near Lebanon, Oregon; 1940-08-14 From Album 1 page 9 Title: Headgates Year: 1940 Last headgates in Albany Power Ditch just before it enters Crown Willamette Paper Company property near Lebanon, Oregon; 1940-08-14 From Album 1 page 9 Close

• 34. [Image] Upper concrete dam

  	Upper concrete dam in South Santiam River 2 1/2 miles above Lebanon, Oregon The Lebanon power diversion takes off a short distance above this dam on the right side;1940-08-14 From Album 1 page 10
  	Citation × Citation Citation Abstract Copy Title: Upper concrete dam Year: 1940 Upper concrete dam in South Santiam River 2 1/2 miles above Lebanon, Oregon The Lebanon power diversion takes off a short distance above this dam on the right side;1940-08-14 From Album 1 page 10 Title: Upper concrete dam Year: 1940 Upper concrete dam in South Santiam River 2 1/2 miles above Lebanon, Oregon The Lebanon power diversion takes off a short distance above this dam on the right side;1940-08-14 From Album 1 page 10 Close

• 35. [Image] Headgates of power ditch

  	Headgates of power ditch (shown faintly on left side of photo) taking off above Willamina Dam The dam is located on Willamina Creek, a tributary of the South Yamhill River, near Willamina, Oregon; 194...
  	Citation × Citation Citation Abstract Copy Title: Headgates of power ditch Year: 1940 Headgates of power ditch (shown faintly on left side of photo) taking off above Willamina Dam The dam is located on Willamina Creek, a tributary of the South Yamhill River, near Willamina, Oregon; 1940-09-29 Title: Headgates of power ditch Year: 1940 Headgates of power ditch (shown faintly on left side of photo) taking off above Willamina Dam The dam is located on Willamina Creek, a tributary of the South Yamhill River, near Willamina, Oregon; 1940-09-29 Close

• 36. [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

• 37. [Image] Central fish hoist and elevator

  	Central fish hoist and elevator at Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Central fish hoist and elevator Year: 1939 Central fish hoist and elevator at Rock Island Dam Title: Central fish hoist and elevator Year: 1939 Central fish hoist and elevator at Rock Island Dam Close

• 38. [Image] Left fish trap

  	Left (east) fish trap at Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: Left fish trap Year: 1940 Left (east) fish trap at Rock Island Dam Title: Left fish trap Year: 1940 Left (east) fish trap at Rock Island Dam Close

• 39. [Image] Lamprey eels at the Bonneville Dam

  	Lampreys are using a temporary fish ladder while the dam is under construction
  	Citation × Citation Citation Abstract Copy Title: Lamprey eels at the Bonneville Dam Year: 1937 Lampreys are using a temporary fish ladder while the dam is under construction Title: Lamprey eels at the Bonneville Dam Year: 1937 Lampreys are using a temporary fish ladder while the dam is under construction Close

• 40. [Image] Finley Mill Dam

  	Citation × Citation Citation Abstract Copy Title: Finley Mill Dam Year: 1940 Title: Finley Mill Dam Year: 1940 Close

• 41. [Image] Rotary screens in Wapato Ditch

  	Citation × Citation Citation Abstract Copy Title: Rotary screens in Wapato Ditch Year: 1941 Title: Rotary screens in Wapato Ditch Year: 1941 Close

• 42. [Image] Catherine Creek diversion dam

  	A wire-covered rock irrigation diversion dam on Catherine Creek. Diversion dam is 2100 yards above Little Catherine Creek confluence
  	Citation × Citation Citation Abstract Copy Title: Catherine Creek diversion dam Year: 1937 A wire-covered rock irrigation diversion dam on Catherine Creek. Diversion dam is 2100 yards above Little Catherine Creek confluence Title: Catherine Creek diversion dam Year: 1937 A wire-covered rock irrigation diversion dam on Catherine Creek. Diversion dam is 2100 yards above Little Catherine Creek confluence Close

• 43. [Image] Mill dam

  	Impassible 6 foot mill dam on top of bedrock chute a short distance above the highway bridge. The milldam is on Sulphur Creek, a tributary of the Cowlitz River
  	Citation × Citation Citation Abstract Copy Title: Mill dam Year: 1941 Impassible 6 foot mill dam on top of bedrock chute a short distance above the highway bridge. The milldam is on Sulphur Creek, a tributary of the Cowlitz River Title: Mill dam Year: 1941 Impassible 6 foot mill dam on top of bedrock chute a short distance above the highway bridge. The milldam is on Sulphur Creek, a tributary of the Cowlitz River Close

• 44. [Image] Mann Creek temporary diversion dam

  	Temporary diversion dam on Mann Creek 1500 yards below US 95 bridge. This dam takes all the water which seeps through another dam 150 yards upstream. The low water is a barrier for fish
  	Citation × Citation Citation Abstract Copy Title: Mann Creek temporary diversion dam Year: 1941 Temporary diversion dam on Mann Creek 1500 yards below US 95 bridge. This dam takes all the water which seeps through another dam 150 yards upstream. The low water is a barrier for fish Title: Mann Creek temporary diversion dam Year: 1941 Temporary diversion dam on Mann Creek 1500 yards below US 95 bridge. This dam takes all the water which seeps through another dam 150 yards upstream. The low water is a barrier for fish Close

• 45. [Image] Fish screens, head-gates, & by-pass

  	Citation × Citation Citation Abstract Copy Title: Fish screens, head-gates, & by-pass Year: 1940 Title: Fish screens, head-gates, & by-pass Year: 1940 Close

• 46. [Image] Stayton power canal by-pass

  	Stayton power canal by-pass; 1940-08-06
  	Citation × Citation Citation Abstract Copy Title: Stayton power canal by-pass Year: 1940 Stayton power canal by-pass; 1940-08-06 Title: Stayton power canal by-pass Year: 1940 Stayton power canal by-pass; 1940-08-06 Close

• 47. [Image] Headgates

  	Downstream view of last headgates in Albany Power Ditch, located just below the Crown-Willamette Paper Company property near Lebanon, Oregon Paul Zimmer is making observations; 1940-08-14 From Album 1 ...
  	Citation × Citation Citation Abstract Copy Title: Headgates Year: 1940 Downstream view of last headgates in Albany Power Ditch, located just below the Crown-Willamette Paper Company property near Lebanon, Oregon Paul Zimmer is making observations; 1940-08-14 From Album 1 page 8 Title: Headgates Year: 1940 Downstream view of last headgates in Albany Power Ditch, located just below the Crown-Willamette Paper Company property near Lebanon, Oregon Paul Zimmer is making observations; 1940-08-14 From Album 1 page 8 Close

• 48. [Image] Roll way at the Bonneville Dam

  	Citation × Citation Citation Abstract Copy Title: Roll way at the Bonneville Dam Year: 1937 Title: Roll way at the Bonneville Dam Year: 1937 Close

• 49. [Image] Catherine Creek diversion dam

  	Diversion dam for flour mill at Union, Oregon
  	Citation × Citation Citation Abstract Copy Title: Catherine Creek diversion dam Year: 1941 Diversion dam for flour mill at Union, Oregon Title: Catherine Creek diversion dam Year: 1941 Diversion dam for flour mill at Union, Oregon Close

• 50. [Image] Rosa Dam

  	Fish ladder over Rosa Dam
  	Citation × Citation Citation Abstract Copy Title: Rosa Dam Year: 1941 Fish ladder over Rosa Dam Title: Rosa Dam Year: 1941 Fish ladder over Rosa Dam Close