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Thursday, September 13, 2012

Scofield Dam Failed on June 25, 1917

Scofield after the dam failed in 1917 (from the Johannah Madsen Hafen Collectiohn.

History  (taken from Wikipedia)

Irrigation development of lands served by the Scofield Project began in 1883. Ditch companies were organized, and the water was diverted from the natural flow of the Price River. From time to time, canal systems were combined and extended until it was found that natural flow of the river was inadequate to supply irrigation demands fully.
The Mammoth Reservoir Company was incorporated and made filings on the floodwaters of the Price River in 1896. In 1900, a group of farmers from Sanpete County secured the rights of the company for storing water and conveying it by transmountain diversion to their lands.
During 1902, the Sanpete group had financial difficulties and the project passed into the hands of the Irrigated Lands Co. The latter company abandoned the idea of watering Sanpete County lands and made plans to irrigate 25,000 acres (100 km2) near Price, Utah. The company, in cooperation with the State of Utah, proceeded with construction of Mammoth Dam. After going through considerable financial difficulty, the Irrigated Lands Co. was reorganized in 1911 to form the Price River Irrigation Co., which developed the project as rapidly as financial conditions and demand for water would permit. The dam failed June 25, 1917, when it was only partly completed, releasing 11,000 acre·ft (14,000,000 m3) of water and causing flood damage estimated at $1 million to railroad and mining property.
The Price River Water Conservation District, a municipal corporation, was organized in 1921 for developing storage facilities in the Price River watershed to replace the destroyed Mammoth Dam. Under the district's direction, Scofield Dam 39°47′12″N 111°07′13″W was constructed during 1925-1926. The reservoir formed behind the dam had a capacity of 6,000 acre·ft (7,400,000 m3). In May 1928, with the reservoir practically filled for the first time, the dam partially failed.
Emergency repairs, together with rapid evacuation of storage water through the outlet tunnel, were effective in preventing complete failure and a devastating flood. Numerous attempts at placing the dam in a safe operating condition were unsuccessful. In view of the apparent weakness of the dam, storage in Scofield Reservoir was strictly limited to a maximum of 30,000 acre·ft (37,000,000 m3).[1]
The replacement of the original dam was expedited during World War II because a potential failure of the existing dam posed a threat to the war effort.[3] The Bureau of Reclamation investigated the development of the Scofield Project in accordance with a cooperative contract between the United States and the State of Utah. The study resulted in the adoption of the plan to replace the unsafe Scofield Dam with a completely new and larger structure to be erected about 800 feet (240 m) downstream from the existing dam.[1]
The project was authorized by the president on June 24, 1943, under the terms of the Water Conservation and Utilization Act of August 11, 1939 (53 Stat. 1418), as amended.[1]
Under the Utah Water Conservancy Act of 1941, the Carbon Water Conservancy District was organized in 1943 for the purpose of negotiating a contract with the United States for construction of the new dam. Contract negotiations between this district, the Price River Water Conservation District, and the United States were completed in 1943.[1]
Construction of the new storage works by the W.W. Clyde Company of Springville, Utah was undertaken during World War II to prevent possible flood damage to the main line of the Denver and Rio Grande Western Railroad, the State highway, the telephone and telegraph lines, and the coal mines, all of which were important to the war effort.[1] The new dam was completed June 15, 1946.

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