When the Missoula floods surged into the Snake River, they backflooded 150 miles upstream, leaving fine silts at the distal reach. At the same time, the Bonneville flood thundered north through Hell’s Canyon, dropping massive boulders at its mouth. At Tammany Bar, the two torrents met —coarse Bonneville gravels overlying Missoula silts —a geological record of cataclysms colliding. | The Randall Carlson

The National Parks Service built on decades of research and science to create a never-before-seen POV of the Ice Age (Missoula) floods. | KREM 2 News

Two colossal floods—the Bonneville and Missoula—collided in prehistoric Idaho, reshaping the Pacific Northwest. Lake Bonneville, once 1,000 feet deep, burst through a natural dam and carved out the Snake River and Hells Canyon, the continent’s deepest gorge. Meanwhile, the Missoula flood surged from the north, creating a geological showdown of epic proportions. Full Episode: https://youtu.be/EsYcnXXWu08?si=PRA8hGiwzdXZYbQH | Matt Beall Podcast

Becket Fusik The Missoula Floods carved branching channels directly into solid rock across eastern Washington, inundated the Columbia Gorge and Willamette Valley, and discharged into the Pacific Ocean. That's the kind of water volume required to create the channeled scablands, not gradual erosion but catastrophic flooding on a scale that reshapes entire landscapes. And it wasn't limited to just one region as mega floods occurred along every major ice sheet margin during the Pleistocene across No

The Missoula Floods are legendary—but was Lake Missoula really their source? We’re talking mega floods: water flows exceeding 1 million cubic feet per second. The Bonneville Flood hit that minimum at 35 million. Missoula? Try 10 times that—up to 400 million cubic feet per second. The landscape remembers. But are we asking the right questions? | The Randall Carlson