Columbia River Gorge Chapter

Columbia River Gorge - Beauty Born in Mayhem

Not Always So Serene

The tranquil beauty of today’s Gorge belies the ~50 million years of volcanic and floods-induced mayhem that created this natural wonder. For well over 20 million years the Columbia River has slowly cut its valley through layers of basalt, taking many paths to the sea. By the time of the Ice Age Floods the Columbia River occupied a typical V-shaped river valley along its current path.

Beginning about 17,000 years ago, multiple cataclysmic Ice Age Floods, up to 1000 feet deep, rampaged down the valley, ripping basalt bedrock out of the valley walls and scouring the valley floor. Giant whirlpools plucked basalt bedrock from the bottom. Bedrock hoodoos, streamlined basalt buttes, hanging stream valleys, landslides, huge gravel deposits and the box-like cross section of today’s Gorge were left behind as the Floods subsided. Also left behind are ceberg-transported erratics that mark the upper limits of the Flood waters that backflowed up tributaries and backfilled adjacent basins. 

Though hardly recognizable in a human time scale, the mayhem continues to this day, with devastating fires, mud flows and landslides, eventual earthquakes and volcanic eruptions. It is not as serene as it appears!

About Columbia River Gorge Chapter

The Columbia River Gorge is famous the world over for its stunning scenery, award-winning wines, endless outdoor and adventure sports. It also boasts an amazing array of geologic, Ice Age floods, scenic and human attractions to delight everyone from the casual tourist to the most intensely-focused researcher.

These features nestle in ecological zones ranging from snow-clad volcanic peaks to boreal rainforest, oak woodlands, and high desert, all within a 50 mile wide swath around the mighty Columbia River. The opportunities for exploration are exquisite and endless.

The Columbia Gorge Chapter hosts distinguished speakers, co-leads OSU’s Gorge Master Naturalist Program and offers small group presentations and field trips. We also produce the IAFI website and the ‘Pleistocene Post’ IAFI newsletter. Contact us for more information or for arrangements to come explore with us!

Lloyd DeKay
President

Communications

Lorrie DeKay
Treasurer
Membership 

Patty Hurd
IAFI Store Manager

Columbia River Gorge Chapter
Columbia River Gorge Chapter News

Columbia River Gorge Chapter News

Map and Events

Upcoming IAFI Events

April 2025
Apr 28
April 28, 2025
White Salmon Valley Community Library, 77 NE Wauna Ave
White Salmon, WA 98672 United States
Apr 28
April 28, 2025
Moran Prairie Library, 6004 S Regal St
Spokane, WA 99223
May 2025

Chapter Location

Upcoming Chapter Events

April 2025
Apr 28
April 28, 2025
White Salmon Valley Community Library, 77 NE Wauna Ave
White Salmon, WA 98672 United States
May 2025
History

History of Columbia River Gorge Chapter, IAFI

Terry Hurd
Patty Hurd

The Columbia River Gorge Chapter was founded in 2007 through the efforts of Terry and Patty Hurd, Les Hastings, Pat Culver, Linda Turner, Bernadette Price, and several early member enthusiasts whose Floods interests were piqued on local field trips.

The chapter has organized presentations at the Hood River library, White Salmon library, Columbia Gorge Interpretive Center, Columbia Gorge Discovery Center, Vista House, and at the old jail and the Historic Wasco Co. Courthouse in The Dalles. Presenters have included Nick Zentner, Scott Burns, Bruce Bjornstad, Jim Connors, Richard Waite, John Soennichsen, Ellen Morris Bishop, Rick and Sylvia Thompson, Bob DeTar and others. Terry also did a few presentations at Memaloose campgrounds for the Oregon Park Service ,  one for Sherman County Wheat Growers, and represented the chapter at Wagons and Wheels when they were getting the Horsethief Lake State Park system set up. The chapter hosted the 2010 IAFI Annual Membership Meeting based out of The Dalles. 

Alan Busacca

The chapter has also organized scouting and field trips to Strawberry Mountain, the Cherry Orchards Conservancy near Lyle, the grounds at Maryhill museum, a farm behind Arlington, up Phillipi Canyon, several around Fifteen-Mile and Nine-Mile creeks where the Flood waters spilled over the walls of the Gorge, and even a wine tour with Alan Busacca. We’ve also done presentations at local school classrooms.

Lloyd DeKay

It was on one of those field trips that Terry met Lloyd DeKay, whom Terry convinced to help organize and lead a more comprehensive Columbia Gorge Geology field trip. That field trip ran regularly 2-3 times each year from 2011-2017, and still runs occasionally as fundraisers for local groups. Lloyd took over the presidency of the chapter in 2015 as Terry’s health deteriorated and he eventually passed away. Lorrie DeKay became the IAFI Membership Manager in 2023 after the previous manager, Sylvia Thompson, moved away.

Lloyd is also the IAFI.org webmaster, has spearheaded two redesigns of the IAFI website (IAFI.org), redesigned brochures for IAFI and each of its 11 chapters, redesigned and publishes the quarterly Pleistocene Post, helped remake the Ice Age Floods in the Pacific Northwest map and a new Glacial and Temporary Lake map, developed display panels for meetings and conventions, and provides ongoing technical support for IAFI in general..

There is a critical need for chapter volunteers to help arrange regular public presentations and chapter activities, and to fill chapter leadership positions of vice-president, secretary and treasurer.

We recognize that there is considerable controversy and diversity of opinions regarding the source and timing of the ice-age megafloods and the landscape they impacted, even whether indigenous people were in the area to experience the megafloods.  We also recognize that some of our chapter’s geologic features are somewhat obscured or altered in places due to the impacts of Bonneville, The Dalles, John Day, and Umatilla Dams and the deep reservoirs behind each of them which has raised the height of the Columbia River and its tributaries and covered significant features such as Celilo Falls. There has also been controversy within our chapter when a prominent member left the chapter over issues with strong proponents of Biblical Flood theories. While we welcome members with various beliefs, ideas and points of view, our public and educational emphasis is focused on science-based facts and theories.   

Patty Hurd – IAFI Store Manager