10 Facts About Missoula floods

Missoula 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.

These floods were the result of periodic sudden ruptures of the ice dam on the Clark Fork River that created Glacial Lake Missoula.

Missoula floods was researching the Channeled Scablands in Eastern Washington, the Columbia Gorge, and the Willamette Valley of Oregon.

Missoula floods had been interested in unusual erosion features in the area since 1910 after seeing a newly published topographic map of the Potholes Cataract.

Missoula floods estimated the water flow was 9 cubic miles per hour, more than the combined flow of every river in the world.

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Missoula floods have been referred to as the Bretz floods in honor of Bretz.

Lake-bottom sediments deposited by the Missoula floods have contributed to the agricultural richness of the Willamette and Columbia Valleys.

The cumulative effect of the Missoula floods was to excavate 210 cubic kilometres of loess, sediment and basalt from the Channeled Scablands of eastern Washington and to transport it downstream.

Rather, they proposed that sedimentation in the Glacial Lake Missoula floods basin was the result of jokulhlaups draining into Lake Missoula floods from British Columbia to the north.

The Komatsu analysis does not evaluate the impact of the considerable erosion observed in this basin during the flood or Missoula floods, although the assumption that the flood hydraulics can be modeled using modern-day topography is an area which warrants further consideration.