page_title: Moses Coulee
section_title: Geologic history
hierarchical_section_title: Moses Coulee / Geologic history
caption_attribution_description: Moses Coulee photo taken in November, 2006. Photo taken by uploader. All rights released. Williamborg 14:42, 18 November 2006 (UTC)
context_page_description: Moses Coulee is a canyon in the Waterville plateau region of Douglas County, Washington. Moses Coulee is the second-largest and westernmost canyon of the Channeled Scablands, located about 30 kilometres 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 m³/s carved the channel. While it's clear that megafloods from Glacial Lake Missoula passed through and contributed to the erosion of Moses Coulee, the origins of the coulee are less clear. Some researchers propose that floods from glacial Lake Missoula formed Moses Coulee, while others suggest that subglacial floods from the Okanogan Lobe incised the canyon. The mouth of Moses Coulee discharges into the Columbia River.
  Two National Natural Landmarks were established in 1986 for features, notable as the best examples of their kind, in and around Moses Coulee.
caption: Moses Coulee at mid canyon
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