(6) The Greater Grand Canyon ecosystem and watershed is integral to Grand Canyon National Park. The surface tributaries and groundwater sources within the watershed are interconnected and contribute significantly to the flow of the Colorado River, and provide a source of drinking water for millions of American citizens. (7) The Greater Grand Canyon ecosystem and watershed contains a diverse array of canyons, cliffs, grasslands, springs, and escarpments that create a landscape unlike any other within America. (8) Wildlife corridors within the Greater Grand Canyon ecosystem and watershed facilitate the migration and survival of many native game species while the rivers, forests, and grasslands provide habitat for many rare, threatened, and endangered species. (9) The Greater Grand Canyon ecosystem and watershed provides a wild and rugged landscape enjoyed by hunters, campers, hikers, mountain bikers, equestrians, and other recreationists. (10) Recreational activity within the watershed is the primary driver of sustainable economic development in local communities. (b) Establishment Subject to valid existing rights, there is hereby established the Greater Grand Canyon Heritage National Monument in the State of Arizona, which consists of Federal land and interests in Federal land in Arizona, as generally depicted on the map entitled Greater Grand Canyon Heritage National Monument and dated September 11, 2015. (c) Purposes The purposes of the national monument are— (1) to preserve and, if necessary, restore the native, cultural, sacred lands, and key tribal resources, nationally significant biological, ecological, including wildlife connectivity, cultural, historical, recreational, geological, hydrological, education, scenic and scientific values found in the Greater Grand Canyon ecosystem and watershed, including aboveground tributaries, springs and interconnected groundwater that contribute significantly to the Colorado River