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A view through a coulee in Alberta, with steep but lower sides, and water in the bottom. Coulee, or coulée (/ ˈ k uː l eɪ / or / ˈ k uː l iː /), [1] is any of various different landforms, all of which are kinds of valleys or drainage zones. The word coulee comes from the Canadian French coulée, from French couler 'to flow'.
Grand Coulee is a large coulee on the Columbia River Plateau.This area has underlying granite bedrock, formed deep in the Earth's crust 40 to 60 million years ago. The land periodically uplifted and subsided over millions of years giving rise to some small mountains and, eventually, an inland sea.
The Grand Coulee Dam, powerplant, and various other parts of the CBP are operated by the Bureau of Reclamation. There are three irrigation districts (the Quincy-Columbia Basin Irrigation District, the East Columbia Basin Irrigation District, and the South Columbia Basin Irrigation District) in the project area, which operate additional local ...
The Coulee Region is the southwestern part of the Driftless Area in Wisconsin. It is named for its numerous ravines. It is named for its numerous ravines. Never covered by ice during the last ice age , the area lacks the characteristic glacial deposits known as drift .
Grand Coulee Dam is a concrete gravity dam on the Columbia River in the U.S. state of Washington, built to produce hydroelectric power and provide irrigation water ...
Moses Coulee is the second-largest and westernmost canyon of the Channeled Scablands, located about 30 kilometres (19 mi) to the west of the larger Grand Coulee. This water channel is now dry, but during glacial periods, large outburst floods with discharges greater than 600,000 m 3 /s (21,000,000 cu ft/s) carved the channel. [ 1 ]
Coulee City is located at (47.611942, -119.290904 It sits on the southern shore of Banks Lake, a man-made reservoir that stretches for 27 miles to Grand Coulee Dam.At Coulee City, water from the reservoir enters a system of irrigation canals taking it to Billy Clapp Lake to the south and then beyond across the broader Columbia Basin Project.
In the 1920s, there was a proposal to divert the Pend Oreille through a 60 miles (97 km) gravity canal to irrigate the Grand Coulee and surrounding lands in eastern Washington as part of the tentative Columbia Basin Project. These plans were later dropped with the construction of Grand Coulee Dam and a pumping plant on the Columbia River.