Owyhee Dam A project of the Bureau of Reclamation, they hired General Construction Company from Seattle to build the dam. Former Oregonian and then United States President Herbert Hoover dedicated what was the highest dam of its type in the world on July 17, 1932. Secretary of the Interior Ray Lyman Wilbur delivered Hoover's message at the dam. Owyhee's construction served as a prototype for the larger Hoover Dam on the Colorado River, including the use of refrigeration to cool the concrete. The dam cost $6,000,000, with the total reclamation project costing $18,000,000. Owyhee was designed by Frank A. Banks, who also
Attack on the Sui-ho Dam void in power generation. The Sui-ho Dam (now Supung Dam or sometimes Shuifeng Dam) on the Yalu River (), at the time the fourth largest in the world, had been constructed in 1941 by Japan. The concrete dam was 2,800 feet (853 m) in length, 300 feet (97 m) thick at the base, 60 feet (18 m) wide at the crest, and 525 feet (160 m) in height. Its reservoir storage capacity was more than 20 billion cubic meters, and the Japanese had built six turbine generators each with a capacity of 100,000 kilowatts. The dam's generating facilities provided power