Spillway: (Satellite)
Power Plant: (Satellite)
The earthen dam suffered two landslides during construction. The first one happened early with a designed slope of 1:1. The slope was changed to 1:3, and construction continued. The second happened near completion because the weak shale bedrock failed. They convened the design committee, and they concluded that the dam should be fixed and completed. These screenshots are of the second landslide.
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| 28:04 video @ 23:34 Fort Peck Dam Construction |
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| @ 23:50 |
The power plant is on the left. I don't know why the buildings are so tall. If they are surge tanks, they are awful big.
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| Street View, Jun 2023 |
The consulted expert blames the big landslide during construction on the use of hydraulic fill rather than on the shale that deteriorated when exposed to weather. Thus, he says the dam could fail again. If Fort Peck Dam breaks, the deluge of water could break the big downstream dams. This would flood St. Louis with a lot more water than the 1993 flood.
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| 4:44 video @ 2:12 When the dam breaks: 'Flawed' dam may threaten St. Louis area "BECAUSE OF DAMAGE FROM EARTHQUAKES IN THE 1970, THE STATE OF CALIFORNIA REQUIRED ALL HYDRAULIC FILLED DAMS BE TORN DOWN OR REBUILT. NO OTHER LARGE DAMS HAVE BEEN BUILT THAT WAY SINCE." |
Mark Sepolio Photography posted two photos with the comment: "This the Spillway... Although The Fort Peck Dam in Montana: It is the largest hydraulically filled dam in the United States and creates Fort Peck Lake, the fifth largest artificial lake in the U.S. The dam is over 250 feet [76m] in height and 21,026 feet [6.4km, 4 miles] in length. What’s more, the dam was constructed not only for flood control but also to create jobs during the Great Depression. At its peak in 1936, it provided 10,456 jobs. Isn’t that fascinating?"
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| Gus Copenhaver commented on the above post Now you're in my familys' part of Mt. |
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| Jo, Nov 2022 |
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| Jo, Nov 2022 |
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| Shreya07 posted Fort Peck Dam Fort Peck Dam is one of the largest earth-fill dams in the world, located in northeastern Montana on the Missouri River. Built during the Great Depression, it stands as a landmark of American engineering and New Deal–era public works. Construction and History Construction began in 1933 and was completed in 1940 as part of large federal projects designed to create jobs and modernize infrastructure. Thousands of workers came to the remote plains to build the massive structure, turning the project into a major historical chapter for the region. At the time, it was among the biggest dam projects ever attempted in the U.S. Size and Engineering Fort Peck Dam is over 21,000 feet (6,400 m) long and about 250 feet (76 m) high. Unlike concrete dams, it is made primarily of compacted earth and rock, which required enormous volumes of material and careful design. Fort Peck Lake The dam created Fort Peck Lake, one of the largest man-made lakes in the United States. The lake stretches for more than 130 miles and has a shoreline longer than California’s coast. Purpose Fort Peck Dam serves multiple roles: Hydroelectric power generation Flood control along the Missouri River Water storage and river management Recreation and tourism Recreation and Wildlife The area around the lake is known for outdoor activities such as: Fishing for walleye, pike, and bass Boating and camping Wildlife watching It is managed in part by the U.S. Army Corps of Engineers, which oversees dam operations and recreation areas. Why It Matters Fort Peck Dam is both an engineering achievement and a historical symbol of the New Deal era. Today it continues to provide power, manage water, and support recreation in the northern Great Plains. |
This image is small because it may be AI generated.
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| History Old Photos posted It was a crisp autumn day on October 10, 1936, at the massive construction site of Fort Peck Dam in northeastern Montana. Dozens of workers swarmed over the enormous circular steel liner — a giant diversion tunnel section designed so that one-fourth of the mighty Missouri River would eventually flow through it during the dam’s construction. Men in work clothes and caps balanced on scaffolding and internal spokes, welding, bolting, and guiding the massive structure into place with ropes and tools. The huge steel cylinder dominated the scene, dwarfing the workers and highlighting the incredible scale of this New Deal engineering project. Built to tame the Missouri River, provide jobs during the Great Depression, and bring flood control and navigation to the region, Fort Peck Dam was one of the largest earth-filled dams in the world. This iconic photograph by Margaret Bourke-White captured both the raw power of American industry and the human effort behind it. |
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| Cayla Jasske commented on the above post This is a real photo……don’t think this post is…another AI |
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