Garrison Dam Tribes. Construction on the $300-million dam project began in 1947, and its embankment was enclosed in April 1953. The dam was dedicated by President Eisenhower two months later. The Corps of Engineers completed earthwork in the fall of 1954. Garrison Dam is one of six Missouri River Main stem dams operated by the U.S. Army Corps of Engineers, Omaha District. The dam upstream of Garrison Dam is Fort Peck Dam (near Fort Peck, Montana). The dams downstream of Garrison Dam are: Oahe Dam (near Pierre, South Dakota), Big Bend Dam (near Fort Thompson, South Dakota), Fort Randall Dam (near Pickstown,
Kirirom 1 Hydropower Dam Chinese State Owned Enterprise, China Electric Power Technology Import & Export Corporation (CETIC), was contracted to re-build the project at a cost of US$24 million under a 30-year build-operate-transfer (BOT) agreement. The Council for Development of Cambodia approved the project on 29 December 2000 and in May 2002 the project re-commenced operation, providing electricity to Kampong Speu Province and Phnom Penh. The project is managed by Electricity du Cambodge and is linked to Phnom Penh by a 120 km long, 115kV transmission line Kirirom 1 Hydropower Dam The Kirirom 1 Dam is an embankment dam located in the Kirirom National