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Conconully Dam |
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Power Generation Narration
Conconully is located in Okanogan Highlands a mountainous district bordered by the Columbia Plateau to the south and the Cascade Mountains to the west, and includes the Colville Mountains which apparently represent a continuation of the higher mountains in British Columbia. The damsite is located in the southern end of the glaciated valley. The effect of the glacial ice was to scour out a depression below the surrounding area much like an enclosed valley. Granite rock generally forms the right wall of the valley; however, at the damsite elevation there exists a short ridge of metamorphic sedimentary rock. The left abutment and left valley wall are formed in metamorphic sedimentary rock. The valley floor is composed of deposited glacial and alluvial materials such as silt, clay, sand and gravel, including boulders and blocks of rock. The spillway is located in the rock ridge of the right abutment. The outlet works was excavated through the metamorphic sedimentary rock comprising the left abutment. The rock is gneiss; light to medium gray on a fresh surface it weathers and oxidizes to a grayish brown. The rock is hard, where unweathered, and moderately jointed. Links | Recreation | | Dams Located by State | USBR Washington Dams | Pacific Northwest Region Dams | | Owner: Bureau of Reclamation, Upper Columbia Area Office, | Operator: Okanogan Irrigation District, |
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