Description
14" x 22" poster
Interpretive Copy
When completed, Boulder Dam, as it was then known, was the tallest dam in the world. Equal to the height of a 60-story building, the structure had to be capable of holding back the immense volume of what is still the largest man made lake in the United States. First dedicated by President Franklin D. Roosevelt on September 30, 1935, the dam was renamed in honor of president Herbert Hoover in 1947.