[PAR] [TLE] Lake Mead [SEP] Lake Mead is the largest reservoir in the United States in terms of water capacity.  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.  Lake Mead is on the Colorado River, about 24 mi from the Las Vegas Strip, southeast of the city of Las Vegas, Nevada, in the states of Nevada and Arizona. [PAR] [TLE] Colorado River [SEP] The Colorado River is one of the principal rivers of the Southwestern United States and northern Mexico (the other being the Rio Grande).  The 1450 mi river drains an expansive, arid watershed that encompasses parts of seven U.S. and two Mexican states.  Starting in the central Rocky Mountains in the U.S., the river flows generally southwest across the Colorado Plateau and through the Grand Canyon before reaching Lake Mead on the Arizona–Nevada border, where it turns south toward the international border.  After entering Mexico, the Colorado approaches the mostly dry Colorado River Delta at the tip of the Gulf of California between Baja California and Sonora.
[PAR] [TLE] Lake Mead [ SEP ] Lake Mead is the largest reservoir in the United States in terms of water capacity . 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 . Lake Mead is on the Colorado River , about 24 mi from the Las Vegas Strip , southeast of the city of Las Vegas , Nevada , in the states of Nevada and Arizona . [PAR] [TLE] Colorado River [ SEP ] The Colorado River is one of the principal rivers of the Southwestern United States and northern Mexico ( the other being the Rio Grande ) . The 1450 mi river drains an expansive , arid watershed that encompasses parts of seven U.S. and two Mexican states . Starting in the central Rocky Mountains in the U.S. , the river flows generally southwest across the Colorado Plateau and through the Grand Canyon before reaching Lake Mead on the Arizona – Nevada border , where it turns south toward the international border . After entering Mexico , the Colorado approaches the mostly dry Colorado River Delta at the tip of the Gulf of California between Baja California and Sonora .
Where does the river on which the United States' largest reservoir is located originate?
Where does the river on which the United States ' largest reservoir is located originate ?
the central Rocky Mountains
the central Rocky Mountains