STS060-083-001 Lake Powell and Kaiparowits Plateau, Utah and Arizona, U.S.A. February 1994 The southern portion of Lake Powell in Glen Canyon National Recreation Area is featured in this northeast-looking, low-oblique photograph. Rugged, snow-covered Navajo Mountain (near the upper right corner of the photograph) lies east of Lake Powell. Lake Powell covers approximately 252 square miles (653 square kilometers) and is used primarily for recreation and irrigation. Apparent are the Paria Plateau escarpment in northern Arizona (bottom left) and the Kaiparowits Plateau discernible west of the lake.