5616 x 3744 px | 47,5 x 31,7 cm | 18,7 x 12,5 inches | 300dpi
Date de la prise de vue:
17 avril 2011
Informations supplémentaires:
This fish ladder is designed to assist migrating fish swim upstream around the Bonneville dam which would otherwise block their passage. The Bonneville dam is on the Columbia River, on the Washington and Oregon border. This dam is located 40 miles east of Portland Oregon, USA in the Columbia River Gorge. Construction was started in 1933, and completed in 1937. The primary purpose of the dam was for power generation, and to assist in navigation of ships and barges on the Columbia river. The first powerhouse was constructed at the time of the original dam construction, and incorporates 10 generators with an output capacity of 526, 700 kilowatts. The second powerhouse was finished in 1982, and has 8 generators with a capacity of 558, 000 kilowatts. With the construction of the second powerhouse there were fish ladders constructed to help migrating fish navigate around the dam, The Bonneville dam on the Columbia river, on the Washington and Oregon border. This dam is located 40 miles east of Portland Oregon, USA in the Columbia River Gorge. Construction was started in 1933, and completed in 1937. The primary purpose of the dam was for power generation, and to assist in navigation of ships and barges on the Columbia river. The first powerhouse was constructed at the time of the original dam construction, and incorporates 10 generators with an output capacity of 526, 700 kilowatts. The second powerhouse was finished in 1982, and has 8 generators with a capacity of 558, 000 kilowatts. With the construction of the second powerhouse these fish ladders were constructed to help migrating fish, such as Chinook Salmon, Coho Salmon, and Steelhead, navigate successfully around the dam. There are two more generators incorporated into these fish ladders.
