Clarence Cannon Dam and Reservoir:

Cost, Schedule, and Safety Problems

PSAD-77-131: Published: Jul 18, 1977. Publicly Released: Jul 18, 1977.

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The cost of the Clarence Cannon Dam and Reservoir project has more than tripled since 1962, primarily because of inflation and estimating and design refinements. Scheduled completion has been delayed 8 years.

In 1962, the estimated project cost was $63.3 million. The estimate has now increased to $232 million. Certain estimates still lack supporting data, and others appear too high because they contain an excessive amount for contingencies. About half of the delays in project completion was due to funding restrictions imposed by Corps of Engineers Headquarters or by the Office of Management and Budget. Other delays resulted from reassessment of construction schedules and from difficulties in negotiating with the State on road relocation designs. The main dam may not be as safe as planned because defective fill material was used in the foundation.

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