History
The Curecanti Project (later renamed the Wayne N. Aspinall Project) was conceived in 1955, initially with four dams. It was approved by the Secretary of the Interior in 1959, comprising Blue Mesa Dam and Morrow Point Dam. Crystal Dam's design was unfinished and was approved in 1962. Plans for a fourth dam were dropped as uneconomical. The project was restricted to the stretch of the Gunnison above Black Canyon of the Gunnison National Monument (later designated a national park), a 40 miles (64 km) length of the river. Initially planned as a concrete dam, the project was changed to an earthfill design.
Work on the dam started in 1961, with foundation drilling and survey work.Construction of the reservoir required the relocation of US 50 and Colorado State Highway 149. This relocation was among the first work to be performed, starting in 1962 and continuing through 1964. The Sapinero Cemetery was also relocated. The primary construction contract for the dam was awarded to the Tecon Corporation of Dallas, Texas, with notice to proceed on Aprik 23, 1962. The diversion tunnel was holed through on September 7, 1962, with excavation of the spillway tunnel completed by the April 1963. Drilling and grouting for the dam's foundation started in March 1963. The Gunnison was diverted through its tunnel on October, with excavation of the foundation to bedrock immediately after. Placement of the dam embankments started in 1964, continuing through the year, with the dam embankment completed at the end of 1965. The diversion tunnel was partly closed in December and the reservoir began to fill, with final closure of the diversion tunnel on February 7, 1966. The dam project was declared complete on October 19, 1966.
The powerplant project was delayed by a delivery accident to a transformer, which was damaged in an accident in September 1966 near Monarch Pass and had to be shipped back to its manufacturer in Sweden for repair. The powerplant was completed on February 16, 1968.
Spillway modifications took place in 1984-85 to repair damage, while a uniform and largely cosmetic covering of riprap was applied to the dam face.
Read more about this topic: Blue Mesa Dam
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