The Bonneville Flood, North America’s second-largest documented flood, occurred at the end of the last ice age. Triggered by the drainage of a massive lake covering nearly 100,000 square kilometers and nearly 1,000 feet deep, it discharged at an astonishing rate of 40 million cubic feet per second. Its connection to the Missoula Flood remains a fascinating and controversial topic in geological studies. | The Randall Carlson
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It wasn’t just northern Idaho that was subject to immense floods. The ending of the ice age 15,000 years ago also resulted in southern Idaho’s Bonneville flood. You can see the evidence along the Snake River. From our hour-long "Idaho Geology, A Convergence of Wonders," airing Sunday at 7. And check out the website we built for this show, at http://idahoptv.org/outdoors/shows/geology/ | Outdoor Idaho
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Want to learn more about the Bonneville Flood? Join Randall Carlson for a six-day tour through Utah and Idaho from May 11th-17th, exploring the remnants of this ancient catastrophe. Discover how the burst of Lake Bonneville’s dam reshaped the land and dive into the powerful forces behind one of North America’s most significant floods. Don’t miss out on this rare opportunity—get your tickets now! https://randallcarlson.com/event/bonneville-megafloods-2025/ Or click the link in bio! | The Randall
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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
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The Bonneville Flood—40 million cubic feet of water per second—raged through Hell’s Canyon for up to 6 months, deepening it into something even more profound than the Grand Canyon. This was no ordinary flood. It was the draining of an inland sea nearly 1,000 feet deep. | The Randall Carlson
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