I think it's in Nevada, but search it google.com . Hoped that helped!
Lake Mead gives you drinking water and running water for example: watering plants or washing your hands or washing dishes.
No, they are two separate lakes that are both formed by dams along the Colorado River. Lake Mead lies above the Hoover Dam and Lake Mohave lies below the Hoover Dam and above the Davis Dam. Both of the lakes are included in the Lake Mead National Recreation Area.