History
In 1907, the Southern Pacific Company began to acquire water rights for the Oak Grove fork. These rights were transferred in 1911 to the Portland Railway, Light and Power Company, which later became PGE.
In 1923, the concrete diversion dam at Lake Harriet was completed. This lake holds 300 acre feet (370,000 m3) with a surface area of 150 acres (0.61 km2). A 9-foot (2.7 m) pipeline goes downstream from Lake Harriet to the powerhouse. Power generation from the Oak Grove fork began in August 1924.
In 1953, Frog Lake was completed, adding 430 acre feet (530,000 m3) of storage with 13 acres (53,000 m2) of surface, which was later reduced to 266 acre feet (328,000 m3) on 6 acres (24,000 m2) in 1997. Finally, in 1956, the compacted-earth dam for Timothy Lake was completed, creating the largest lake in the system at 1,430 acres (5.8 km2) and 69,000 acre feet (85,000,000 m3). The Oak Grove Powerhouse contains two Francis turbines.
Read more about this topic: Oak Grove Hydroelectric Project
Famous quotes containing the word history:
“What you don’t understand is that it is possible to be an atheist, it is possible not to know if God exists or why He should, and yet to believe that man does not live in a state of nature but in history, and that history as we know it now began with Christ, it was founded by Him on the Gospels.”
—Boris Pasternak (1890–1960)
“Look through the whole history of countries professing the Romish religion, and you will uniformly find the leaven of this besetting and accursed principle of action—that the end will sanction any means.”
—Samuel Taylor Coleridge (1772–1834)
“A country grows in history not only because of the heroism of its troops on the field of battle, it grows also when it turns to justice and to right for the conservation of its interests.”
—Aristide Briand (1862–1932)