Ice Age Floodscapes

Ice Age Floodscapes Direct visual evidence for repeated Ice Age megafloods.

Lower Palouse River - ravaged by repeated Ice Age megafloods. Popular Palouse Falls is hidden along canyon near grove o...
10/25/2025

Lower Palouse River - ravaged by repeated Ice Age megafloods. Popular Palouse Falls is hidden along canyon near grove of trees at top.

Rhythmites within Burlingame Canyon record at least 40 Ice Age megafloods that backflooded into the Walla Walla valley o...
08/24/2025

Rhythmites within Burlingame Canyon record at least 40 Ice Age megafloods that backflooded into the Walla Walla valley of SE Washington.

Devils Canyon Coulee. Dry since the last Ice Age megaflood ~15k years ago!
11/02/2024

Devils Canyon Coulee. Dry since the last Ice Age megaflood ~15k years ago!

"The Feathers" is a single row of massive basalt columns eroded by Ice Age megafloods within Frenchman Coulee. Part of t...
10/26/2024

"The Feathers" is a single row of massive basalt columns eroded by Ice Age megafloods within Frenchman Coulee. Part of the 16 m.y.-old Roza Basalt Member. Now a popular rock-climbing destination.

Yakima River flowing through Benton City yesterday. Rattlesnake Mountain in the distance.
10/23/2024

Yakima River flowing through Benton City yesterday. Rattlesnake Mountain in the distance.

Looking south across the mouth of Frenchman Coulee toward I-90 bridge over the Columbia. Largest floods here were up to ...
10/21/2024

Looking south across the mouth of Frenchman Coulee toward I-90 bridge over the Columbia. Largest floods here were up to 800 ft deep!

Dry Falls and Umatilla Rock from Camp Delany.
10/18/2024

Dry Falls and Umatilla Rock from Camp Delany.

Lead hike to Drumheller Channels with exceptional group of PhD geology students from Univ Arizona.
10/18/2024

Lead hike to Drumheller Channels with exceptional group of PhD geology students from Univ Arizona.

ICE-RAFTED ERRATICPerched atop the White Bluffs is an angular boulder of banded argillite that can be traced to the ~1.5...
10/12/2024

ICE-RAFTED ERRATIC
Perched atop the White Bluffs is an angular boulder of banded argillite that can be traced to the ~1.5 billion-year-old Belt Supergroup and ice dam for glacial Lake Missoula once located in northern Idaho.

Erosional megaflood spillover channels along east side of Wallula Gap.
10/09/2024

Erosional megaflood spillover channels along east side of Wallula Gap.

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