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
Bemposta Dam is 59 m, the maximum 71 m. Maximum flow per turbine is 152 m³/s. In January 2008 construction began on the Bemposta II power plant. In December 2011 work on an additional underground powerhouse was completed and a further Francis turbine with a 191 MW capacity went online. Its average annual generation is 134 GWh. Bemposta Dam Bemposta Dam () is a concrete arch dam on the Douro, where the river forms the national border line between Spain and Portugal. It is located in the municipality Mogadouro, in Bragança District, Portugal. Construction of the dam began in 1957. The dam