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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'.
The Channeled Scablands are a relatively barren and soil-free region of interconnected relict and dry flood channels, coulees and cataracts eroded into Palouse loess and the typically flat-lying basalt flows that remain after cataclysmic floods within the southeastern part of Washington state.
No clear connection between the head of the coulee and major flood routes to the north, east, or west is known. Some researchers propose that floods from glacial Lake Missoula formed Moses Coulee, [2] while others suggest that subglacial floods from the Okanogan Lobe incised the canyon. [3] The mouth of Moses Coulee discharges into the Columbia ...
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.
SR 17 on the shores of Lake Lenore, passing through the Grand Coulee on a highway built in the 1930s.. SR 17 was established during the 1964 highway renumbering as the successor to three highways that were designated under the primary and secondary state highway system: SSH 11G from US 395 and PSH 11 in Eltopia to PSH 7 in Soap Lake, a branch of PSH 7 from Soap Lake to US 2 and PSH 2 west of ...
It is the largest water reclamation project in the United States, supplying irrigation water to over 670,000 acres (2,700 km 2) of the 1,100,000 acres (4,500 km 2) large project area, all of which was originally intended to be supplied and is still classified irrigable and open for the possible enlargement of the system.
[2] Image of the Juan de Fuca Plate that produced the magnitude 8.7–9.2 Cascadia earthquake in 1700. Magnetic anomalies around the Juan de Fuca and Gorda Ridges, off the west coast of North America, color coded by age. There are some unusual features at the Cascade subduction zone. Where the Juan de Fuca Plate sinks beneath the North American ...
Red Rock Coulee sits within grasslands of the mixed grass and dry mixed grass type. [1] Sagebrush , juniper shrubs, and prickly pear cactus grow on the coulee walls, and on the uplands there are colorful wildflowers such as prairie crocus , gumbo evening primrose , yellow umbrella plant , and broomweed .