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Map of the Channeled Scablands. Bretz conducted research and published many papers during the 1920s describing the Channeled Scablands. His theories of how they were formed required short but immense floods – 500 cubic miles (2,100 km 3) – for which Bretz had no explanation.
Drumheller is the most spectacular tract of butte-and basin scabland on the plateau. It is an almost unbelievable labyrinth of anastamosing channels, rock basins, and small abandoned cataracts. [3] Drumheller Channels connects the Quincy Basin, which lies to north, with the Othello Basin on the south.
He had been interested in unusual erosion features in the area since 1910 after seeing a newly published topographic map of the Potholes Cataract. Bretz coined the term Channeled Scablands in 1923 to refer to the area near the Grand Coulee, where massive erosion had cut through basalt deposits. Bretz published a paper in 1923 arguing that the ...
The Channeled Scablands ecoregion contains the coulees and Channeled Scablands of Washington carved out by the cataclysmic Missoula floods, from Wenatchee to Spokane, including public land within the Lake Roosevelt National Recreation Area and Wenatchee National Forest.
Dry Falls — at the heart of Eastern Washington’s channeled scablands of dry, connected flood channels and deep ravines — is the only Washington or Oregon site on the new heritage sites list.
Giant current ripples are an important feature of the Channeled Scablands in Washington state, U.S., which formed during the Last Glacial Maximum as a result of at least 39 glacial lake bursts, called the Missoula floods, which originated from glacial lakes Columbia in Washington and Missoula in Montana. [10] [11] [12] [13]
Dry Falls is a 3.5-mile-long (5.6 km) scalloped precipice with four major alcoves, in central Washington scablands.This cataract complex is on the opposite side of the Upper Grand Coulee from the Columbia River, and at the head of the Lower Grand Coulee, northern end of Lenore Canyon. [1]
Marshall Creek is a stream flowing over 10 miles through Spokane County, Washington from east of the city of Cheney northwest through the channeled scablands and the community of Marshall before ultimately joining Latah Creek in the Latah/Hangman neighborhood of Spokane.