Question: The Black Mountains, a mid-Miocene formation, in which U.S. State, are a series of rugged, arid rocky volcanic mountains ranging in elevations to 3310 ft, the range lies on the north shore of Lake Mead, the largest reservoir in the United States in terms of water capacity?
Sentence (from "Lake Mead"): Formed by the Hoover Dam, the reservoir serves water to the states of Arizona, California, and Nevada, providing sustenance to nearly 20 million people and large areas of farmland.
Relevant evidence: No