Milltown Powerhouse Rehabilitation

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by Michael J. Finn, Ebasco Services Inc, USA,

Document Type: Proceeding Paper

Part of: Water Power '87

Abstract: The Milltown Powerhouse and dam are over 80 years old. The powerhouse and other structures were built in 1906 and are owned by the Montana Power Company. The plant is located on the Clark Fork river in western Montana about five miles from the town of Missoula. The plant and all five generating units are still in operation and have a total capacity of about 3 MW. The main reason for rehabilitation of the project was repair of the rapidly deteriorating dam to provide safe containment of sediment that had almost completely filled in the small reservoir upstream of the dam. The sediment was laden with pollution from previous upstream mining activities. In addition, repair and maintenance of the existing generating units was becoming time consuming and costly because of ever more frequent breakdown and the unavailability of spare parts.

Subject Headings: Power plants | Rehabilitation | Sediment | Rivers and streams | Maintenance | Dam safety | Deterioration | Hydro power | North America | United States | Montana

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