The Bonneville flood was a catastrophic flooding event in the last ice age, which involved massive amounts of water inundating parts of southern Idaho and eastern Washington along the course of the Snake River.

The Lake Bonneville flood filled the Pocatello Valley and flowed up through Marsh Valley and then out onto the Snake River Plain. The flood emptied the top 107 meters of water from Lake Bonneville , an estimated volume of 4,750 cubic km of water (Link and Phoenix, 1996).

Apr 22, 2020 · The large Pleistocene Bonneville flood entered the Columbia River system from the southeast from pluvial Lake Bonneville, the Pleistocene predecessor to Great Salt Lake in the eastern Great Basin.

The Bonneville flood released nearly 1,000 cubic miles of water. The volume of this flood was twice as large as the biggest Missoula Flood. However, unlike the Missoula Floods , the Bonneville Flood occurred over a period of several weeks approximately 17,400 years ago.

Jun 26, 2018 · Starting in eastern Idaho, the prehistoric Bonneville Flood carved the current route of the Snake River, created Shoshone Falls, dropped gigantic boulders all along its route, and etched permanent changes in the Idaho landscape before making it out to sea.

The Bonneville Flood was one of these ancient catastrophic floods that occurred approximately 14,500 years ago (O’Connor, 1993); the result of catastrophic failure of one of the natural dams at Red Rock Pass of Pleistocene Lake Bonneville.

Jul 8, 2024 · The ancient shorelines from before and after the flood can be seen on the mountains near Salt Lake City and Ogden, Utah. The second largest flood known to have occurred on the earth, it scoured the basalt lava flow in Marsh Valley and at Pocatello’s Ross Park.

The Bonneville Flood was one of the largest floods on Earth. First discovered by G.K. Gilbert in the 1870s during his inspection of the outlet at Red Rock Pass, it was rediscovered in the 1950s by Harold Malde and coworkers, leading to mapping and assessment of spectacular flood features along Marsh Creek, Portneuf River, and Snake River for ...

flood places. Lake Bonneville was 20,000 square miles (mostly in but extending began. After a little into Idaho the deluge went by, and Nevada) when the Bonneville River continued to drain into the Snake until the climate got too hot and dry. Eventually, most of the rest of Lake Bonneville evaporated away. Now three remnants, including Salt ...

What happened to Lake Bonneville? Learn about the flood 14,000 years ago and how it still affects the Idaho landscape.