WebMar 28, 2006 · Traces of ancient shore lines in western Montana indicate that the lake was about 950 feet deep at present-day Missoula, 260 feet deep at Darby, and more than 1,100 feet deep at the south end of … Webr/LakeMissoula: All things Missoula Montana and the surrounding areas.
NOVA Mystery of the Megaflood Ice Age Lake PBS
WebGiven the climate conditions of 20,000 years ago, precipitation and glacial meltwater from most of western Montana’s mountainous regions would have ended in Lake Missoula. At its largest extent, Lake Missoula’s depth exceeded 2,000 feet and may have held 600 cubic miles of water—as much as Lake Erie and Lake Ontario combined. 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 … See more Ice dam on the Clark Fork River The Cordilleran ice sheet originating in British Columbia expanded out of the mountains and southward. A tongue of ice pushed down the Purcell Valley or Purcell Trench, … See more Clark Fork Canyon This reach follows Montana Route 200 up the Clark Fork River canyon, 92 miles (148 km) to Paradise, then follows the Clark Fork, then 49 miles (79 km) through the Paradise-St. Regis Canyon along Montana Highway 135 See more • Missoula floods – Heavy floods of the last ice age • Glacial lake outburst flood – Type of outburst flood that occurs when the dam containing a glacial … See more • USGS Site on Glacial Lake Missoula • US Park Service Site for Glacial Lake Missoula National Natural Landmark • PBS's NOVA (TV series): Mystery of the Megaflood for … See more funny 10 hour loops
Waning Pleistocene Ice Sheet – Ice Age Floods Institute
WebMay 1, 2001 · As the ice crossed, and eventually blocked the Clark Fork River, it became an ice dam. Behind this dam was formed one of the largest glacial lakes to have existed during the last ice age. Known as Glacial Lake Missoula, it covered an area over 2,900 square miles, and was nearly 2,000 feet deep at its deepest point by the ice dam. WebMost floods entered glacial Lake Columbia, impounded by the Okanogan lobe, for 2–5 ky between about 18.5 and 15 ka. Glacial Lake Columbia outlived Lake Missoula by >200–400 yr but may have been born later since at least one flood came down the Columbia valley before the Okanogan ice lobe blocked the Columbia valley at 18.5–18 ka. WebSep 20, 2005 · About 15,000 years ago, in the waning millennia of the Ice Age, a vast lake known as Glacial Lake Missoula suddenly burst through the ice dam that plugged it at … funny 10th birthday cards