How much power is generated by the Hoover Dam?

YouTube.com/watch?v=cEL7yc8R42k">http://www.YouTube.com/watch?v=cEL7yc8R42k

^ a very good video summary on Hydroelectric power

Basically water flows through the dam and through a turbine. This spins the turbine, which in turn spins a generator. The generator creates electricity by having magents go around copper.