According to Wikipedia http://en.wikipedia.org/wiki/Hoover_Dam there are some interesting facts about Hoover Dam:
There were 112 deaths related to the construction of the dam
There is enough concrete in the dam to pave a two-lane highway from New York to San Francisco
The table below reflects the distribution of power generated at the dam:
I was a bit surprised we had to pass through a security check point before we could drive into the dam area but I suppose we have to protect our resources. My mom lives less than a mile from a nuclear power plant and since 9/11 it is guarded 24/7 by the National Guard so I guess I shouldn't have been all that surprised.