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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'.
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 ]
Grand Coulee is two canyons, with an open basin in the middle. The Upper Coulee, filled by Banks Lake, is 25 miles (40 km) long with walls 800 to 900 feet (240 to 270 m) tall. It links to the Columbia River at Grand Coulee Dam and leads southward, through the surrounding highlands. The entry to the coulee is 650 feet (200 m) above the Columbia.
The larger cataract was that of the upper Grand Coulee, where the river roared over an 240 m (800 ft) waterfall. The eroding power of the water plucked pieces of basalt from the precipice, causing the falls to retreat 32 km (20 mi) and self-destruct by cutting through to the Columbia River valley near what is now the Grand Coulee Dam. [9]
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 .
Moses Coulee in the US showing multiple flood basalt flows of the Columbia River Basalt Group. The upper basalt is Roza Member, while the lower canyon exposes Frenchmen Springs Member basalt A flood basalt (or plateau basalt [ 1 ] ) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ...
The rover used its Mastcam instrument to capture the area on the 4,352 Martian day of the pioneering mission. Images of the area from NASA’s Mars Reconnaissance Orbiter had shown light-colored ...
The King Coulee Site is located near the mouth of a valley that empties into Lake Pepin. The stream that carved the valley—or "coulee" in the parlance of the Driftless Area—carried sediments down into a small floodplain. Over the centuries the sediments grew deeper while Lake Pepin's water level rose, creating a 4.5-metre deep (15 ft) layer ...