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• 421. [Image] Mann Creek proposed reservoir site

  	Mann Creek showing site of proposed reservoir dam. Test digging on hillside at left
  	Citation × Citation Citation Abstract Copy Title: Mann Creek proposed reservoir site Year: 1941 Mann Creek showing site of proposed reservoir dam. Test digging on hillside at left Title: Mann Creek proposed reservoir site Year: 1941 Mann Creek showing site of proposed reservoir dam. Test digging on hillside at left Close

• 422. [Image] Central trap at Rock Island dam

  	Citation × Citation Citation Abstract Copy Title: Central trap at Rock Island dam Year: 1940 Title: Central trap at Rock Island dam Year: 1940 Close

• 423. [Image] Fishway and diversion dam

  	Fishway and diversion dam for the City of Union, Oregon, domestic water supply found on Catherine Creek
  	Citation × Citation Citation Abstract Copy Title: Fishway and diversion dam Year: 1937 Fishway and diversion dam for the City of Union, Oregon, domestic water supply found on Catherine Creek Title: Fishway and diversion dam Year: 1937 Fishway and diversion dam for the City of Union, Oregon, domestic water supply found on Catherine Creek Close

• 424. [Image] Tunnels leading to brail

  	Picture taken from collecting pool showing tunnels leading to brail, at left trap on the Rock Island Dam during Spring
  	Citation × Citation Citation Abstract Copy Title: Tunnels leading to brail Year: 1939 Picture taken from collecting pool showing tunnels leading to brail, at left trap on the Rock Island Dam during Spring Title: Tunnels leading to brail Year: 1939 Picture taken from collecting pool showing tunnels leading to brail, at left trap on the Rock Island Dam during Spring Close

• 425. [Image] Fish ladder

  	Fish ladder at Clearwater River dam near Lewiston, Idaho
  	Citation × Citation Citation Abstract Copy Title: Fish ladder Year: 1936 Fish ladder at Clearwater River dam near Lewiston, Idaho Title: Fish ladder Year: 1936 Fish ladder at Clearwater River dam near Lewiston, Idaho Close

• 426. [Image] Lewiston Dam

  	Lewiston Dam on the Clearwater River. Washington Water Power Company dam
  	Citation × Citation Citation Abstract Copy Title: Lewiston Dam Year: 1937 Lewiston Dam on the Clearwater River. Washington Water Power Company dam Title: Lewiston Dam Year: 1937 Lewiston Dam on the Clearwater River. Washington Water Power Company dam Close

• 427. [Image] Temporary fish ladder

  	Temporary fish ladder at the Bonneville Dam
  	Citation × Citation Citation Abstract Copy Title: Temporary fish ladder Year: 1937 Temporary fish ladder at the Bonneville Dam Title: Temporary fish ladder Year: 1937 Temporary fish ladder at the Bonneville Dam Close

• 428. [Image] Headgate and grizzly

  	Headgate and grizzly on Old Reservation ditch. There are no rotary screens present on this ditch near Yakima, Washington
  	Citation × Citation Citation Abstract Copy Title: Headgate and grizzly Year: 1941 Headgate and grizzly on Old Reservation ditch. There are no rotary screens present on this ditch near Yakima, Washington Title: Headgate and grizzly Year: 1941 Headgate and grizzly on Old Reservation ditch. There are no rotary screens present on this ditch near Yakima, Washington Close

• 429. [Image] Union water supply reservoir

  	Lower dam in Union, Oregon, water supply reservoir. At low water it is a barrier to fish
  	Citation × Citation Citation Abstract Copy Title: Union water supply reservoir Year: 1941 Lower dam in Union, Oregon, water supply reservoir. At low water it is a barrier to fish Title: Union water supply reservoir Year: 1941 Lower dam in Union, Oregon, water supply reservoir. At low water it is a barrier to fish Close

• 430. [Image] East fish trap at Rock Island Dam

  	East fish trap and upper part of fish ladder at the Rock Island Dam
  	Citation × Citation Citation Abstract Copy Title: East fish trap at Rock Island Dam Year: 1939 East fish trap and upper part of fish ladder at the Rock Island Dam Title: East fish trap at Rock Island Dam Year: 1939 East fish trap and upper part of fish ladder at the Rock Island Dam Close

• 431. [Image] Headgate in Rosa irrigation diversion

  	Downstream view of the rotary gate at the head of the Rosa irrigation ditch at the Rosa Dam
  	Citation × Citation Citation Abstract Copy Title: Headgate in Rosa irrigation diversion Year: 1941 Downstream view of the rotary gate at the head of the Rosa irrigation ditch at the Rosa Dam Title: Headgate in Rosa irrigation diversion Year: 1941 Downstream view of the rotary gate at the head of the Rosa irrigation ditch at the Rosa Dam Close

• 432. [Image] Rosa Dam

  	Rotary gates and spillway at Rosa Dam
  	Citation × Citation Citation Abstract Copy Title: Rosa Dam Year: 1941 Rotary gates and spillway at Rosa Dam Title: Rosa Dam Year: 1941 Rotary gates and spillway at Rosa Dam Close

• 433. [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

• 434. [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

• 435. [Image] Union Gap Diversion

  	Uppermost headgates on Union Gap Ditch. Union Gap Diversion
  	Citation × Citation Citation Abstract Copy Title: Union Gap Diversion Year: 1941 Uppermost headgates on Union Gap Ditch. Union Gap Diversion Title: Union Gap Diversion Year: 1941 Uppermost headgates on Union Gap Ditch. Union Gap Diversion Close

• 436. [Image] Rosa Dam

  	Downstream view of gates and spill at Rosa Dam. Fish ladder is at the extreme right
  	Citation × Citation Citation Abstract Copy Title: Rosa Dam Year: 1941 Downstream view of gates and spill at Rosa Dam. Fish ladder is at the extreme right Title: Rosa Dam Year: 1941 Downstream view of gates and spill at Rosa Dam. Fish ladder is at the extreme right Close