Ice Age Floods Institute

During the ice-ages 17,000 to 12,000 years ago, massive floods transformed much of the Pacific NW landscape when water in a huge Glacial Lake  Missoula in western Montana collapsed an immense ice dam blocking the lake. The floods roared across western Montana, northern Idaho, central Washington, through the Columbia River Gorge and the Portland Oregon area, and finally flushed into the Pacific Ocean at Astoria, Oregon. As glacial ice from Canada continued to creep south it rebuilt the ice dam, and that cycle repeated up to 100+ times. 
Explore video stories of the Ice Age Floods through recorded informative lectures and field excursions with the Ice Age Floods Institute, an authoritative source for information, activities and materials about the Ice Age Floods.