human
When was the Hoover Dam built?
assistant
The Hoover Dam was built between 1931 and 1936. It is located on the Colorado River, about 40 miles upstream from the city of Las Vegas, Nevada. It was constructed as part of the Colorado River Storage Project, which was designed to control flooding on the lower Colorado River. The dam was named after Herbert Hoover, who was president of the United States during the construction of the dam.