It's very difficult to answer questions like this because of the way the US power grid works. Power producing sites put power on the grid, and power consuming sites take power off the grid, and it's not really possible to track exactly what goes where. Think of it this way: the power grid is a big barrel full of water. Las Vegas has a pipe coming out of the barrel, and Hoover Dam has a pipe going into the barrel, but there are many other pipes coming out and going in. Finding out if a particular drop of water flowing through the Las Vegas pipe came from the Hoover Dam pipe would be difficult. The power grid is actually worse than that, because we could theoretically put some dye in the water, but we can't do that with power; an electron is an electron is an electron. That said: Las Vegas actually does not get much of its power from Hoover Dam, since the electric company serving Las Vegas is NV Energy, which owns its own power plants and does not operate the generators at Hoover Dam. NVE's own website states that 70% of their power generation for southern Nevada comes from natural gas fired plants, so at most 30% of Las Vegas' power would come from Hoover Dam (and most likely much less than that). Also, the US Bureau of Reclamation (the agency that operates the generators at the dam) does not list Las Vegas as a recipient of the power generated. They do list the State of Nevada in general (which gets about 23% of the power generated by the dam), but the only specific city in Nevada that's listed is Boulder City, NV.
About 2.8 million killowats.
1
6000000000 volts
Hoover dam was built to supply electrical power to Las Vegas .
To provide the western states with irrigation and electricity-
The Hoover Dam generates 4.2 billion kW/h of electricity each year. The United States produced about 4.151 trillion kW/h of electricity in 2010. This means the Hoover Dam produced about .101% of the total US power.
nevada power, not hoover dam
Hoover dam impounds Lake Mead.
The Hoover Dam was constructed to control flooding on the Colorado River and to generate electricity. As part of that function, it created a large lake that serves as a water reservoir and a recreational facility.
The hoover dam works by spouting water out of penstocks and into a man-made river, which then enters the dam and the moving water turns the turbines of the generator, which produces the energy we need to power things.
CA
CA
The Hoover dam weighs 6,600,000 tons. It took 3,250,000 cubic yards of concrete to build the dam itself
The hydroelectric power generated at Hoover Dam is allocated primarily to southern California, and also to the states of Nevada and Arizona. See:http://en.wikipedia.org/wiki/Hoover_Dam