John Day Dam

The John Day Dam ( English: John Day Dam ) dams in the Pacific Northwest the Columbia River to Lake Umatilla on. The dam was built in 1958-1971 by the U.S. Army Corps of Engineers. It is one of several dams in the Columbia Basin.

The lake, which was dammed in 1968, is 123 km long and extends to the McNary Dam. It lies on the border between the states of Oregon and Washington. The long, narrow reservoir is about 1 to 2 km wide and is used in addition to the production of hydroelectric power and irrigation, waterways, fishing as well as recreational sports such as windsurfing. Just above the dam opens the John Day River in the Columbia.

The 2327 m long and up to 64 m high gravity dam was built 348 km upstream of the mouth of the Columbia to the Pacific, and 45 km east of the city of The Dalles, Oregon. On the Washington side of the northerly Goldendale is at a distance of 32 km to the nearest town. In Oregon the dam to Sherman County heard in Washington for Klickitat County.

Part of the dam is a hydroelectric power plant, which produces a rated power of 2,160 MW. When completed, the power house was said to be the second largest in the world. There is also a ship lock and fish ladders on both sides of the dam.