Glen Canyon National Recreation Area is a recreation and conservation unit of the National Park Service (USA) that encompasses the area around Lake Powell and lower Cataract Canyon in Utah and Arizona, covering 1,254,429 acres of mostly desert. The recreation area borders Capitol Reef National Park and Canyonlands National Park on the north, Grand Staircase-Escalante National Monument on the west, and Grand Canyon National Park on the south. The stated purpose of Glen Canyon NRA is for recreation as well as preservation (whereas a national park may carry more emphasis on natural preservation). The current Lake Powell lies above Glen Canyon, which was flooded by the Glen Canyon Dam, completed in 1966
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