Others drowned in the making of the lake. Along with Edgar and Ethel Stryker, 26 other people were killed that night. “And there’s the 190-foot-deep lake that began to form after the earthquake caused an avalanche of dirt, trees and rock that plugged up the Madison River Canyon. “In Yellowstone National Park, some geysers turned off while others came out of hibernation - suggesting the earthquake rattled the geothermal pipes below the park. The boulder that broke loose and killed Stryker’s father and stepmother hasn’t moved much. Twenty-foot fault scarps that opened up that night are still visible, if grown over. “But while Hebgen Lake miraculously remained, the earthquake left plenty of geographic scars.
The epicenter was about eight miles northwest of Hebgen Lake reservoir on the Madison River, where the water is held back by the Hebgen Dam - ever since known as “The Dam That Held.” That’s an area encompassing nine states and three Canadian provinces. to the east and Provo, Utah to the south. “The earthquake measured 7.3 on the Richter scale and was felt in Seattle to the west Banff, British Colombia, to the north Dickinson, N.D. 17, 1959, when two faults, the Red Canyon fault and the Hebgen fault, slipped and made the world shake at 11:11:37 p.m. Stryker, Johnson and Hoggan were three of the hundreds of people sleeping in tents, campers and cabins along and near the Madison River on Aug. Don Hoggan knew it was an earthquake right away. Barb Johnson’s mom thought it was a hurricane. Person: “Martin Stryker thought it was a thunderstorm. Historic Earthquakes: Hebgen Lake, Montana, 1959 08 18 06:37:15. Deaths in the United States from Earthquakes. Montana Disasters: Fires, Floods, and Other Catastrophes.
“The Hebgen Earthquake: 50 Years On,” Bozeman Daily Chronicle, Jun 20, 2009. 28 National Geophysical Data Center (2008). The Great International Disaster Book (Third Edition).
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