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Lake Missoula was a prehistoric proglacial lake in western Montana that existed periodically at the end of the last ice age between 15,000 and 13,000 years ago. The lake measured about 7,770 square kilometres (3,000 sq mi) and contained about 2,100 cubic kilometres (500 cu mi) of water, half the volume of Lake Michigan .
The Missoula floods (also known as the Spokane floods, the Bretz floods, or Bretz's floods) were cataclysmic glacial lake outburst floods that swept periodically across eastern Washington and down the Columbia River Gorge at the end of the last ice age.
The Ice Age Floods National Geologic Trail is a network of routes connecting natural sites and facilities that provide interpretation of the geological consequences of the Glacial Lake Missoula floods of the last glacial period that occurred about 18,000 to 15,000 years ago. It includes sites in Washington, Oregon, Idaho, and Montana.
The Bonneville flood was a catastrophic flooding event in the last ice age, which involved massive amounts of water inundating parts of southern Idaho and eastern Washington along the course of the Snake River. Unlike the Missoula Floods, which also occurred during the same period in the Pacific Northwest, the Bonneville flood happened only ...
The National Park Service calls it “a geological wonder of North America” carved by the Ice Age floods. ... back the waters of Glacial Lake Missoula in present day Western Montana 18,000 to ...
Lake Dana stage of Lake Lundy @ 590 feet (180 m) above sea level [7] Lake Grasmere stage of Lake Lundy @ 640 feet (200 m) above sea level [7] Lake Tonawanda; 10,000 YBP [8] in western New York; Lake Wayne; ended by 12,000 YBP [7] in Ohio, Pennsylvania, and New York, expanding from Lake Warren to cover most of the Erie basin [1]
The Cordilleran ice sheet produced features such as glacial Lake Missoula, which broke free from its ice dam, causing the massive Missoula Floods. USGS geologists estimate that the cycle of flooding and reformation of the lake lasted an average of 55 years and that the floods occurred about 40 times over the 2,000-year period starting 15,000 ...
Ice Age Floods Study of Alternatives and Environmental Assessment, National Park Service. PBS's NOVA: Mystery of the Megaflood was an episode about the Scablands and Dr Bretz. Ice Age Floods Institute is a nonprofit organization committed to public recognition and education about the Ice Age Floods.