1935 3¢ Dedication of Boulder Dam
Issue Date: September 30, 1935
First City: Boulder City, NV
Quantity Issued: 73,610,650
The Hoover Dam
At 726 feet high and 1,244 feet long, the Hoover Dam is one of the highest concrete dams in the world. The Hoover Dam is 660 feet thick at its base and contains 4.5 million cubic yards of concrete. That’s enough concrete to pave a two-lane highway from New York to San Francisco!
This massive dam is located on the Colorado River, about 25 miles from Las Vegas, Nevada, on that state’s border with Arizona. Its reservoir, Lake Mead, is one of the world’s largest man-made bodies of water. Lake Mead is 115 miles long and 589 feet deep. The dam controls flood waters and provides water and hydroelectric power for much of the Southwestern U.S.
The Hoover Dam was completed in 1936 at a cost of more than $175 million; however, the entire Boulder Canyon Project cost $385 million. Construction started in 1928, while President Herbert Hoover was in office. After Hoover left office in 1933, the Department of the Interior began calling the dam the Boulder Dam or Boulder Canyon Dam. Congress officially named it the Hoover Dam in 1947.