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
Lieu:
Portland, Oregon, USA
Informations supplémentaires:
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 there were fish ladders constructed to help migrating fish navigate around the dam. There are two more generators incorporated into the fish ladders.
