The Grand Canyon region is under the jurisdiction of the Federal government. The Federal government manages the region through “the National Park Service, the Bureau of Indian Affairs, the Fish and Wildlife Service, the Bureau of Reclamation, and the Bureau of Land Management, all in the Department of the Interior, and the Forest Service of the Department of Agriculture†(UNEP, para. 1). Since 1924 the region has been continuously under management with various plans being implemented since then. The park management is based on laws that established the National Park Service. In some of the management activities, local citizens and volunteers have been involved (Graf, 2002). Useful divisions of the region have been carried out for management efficiency:
The Park has been zoned for management purposes. These comprise a natural zone including a proposed Wilderness area (over 90%); Havasupai Uselands and non-wilderness areas and corridors; and a Development zone. Studies of potential boundary adjustments may result in recommendations to revise park boundaries. (UNEP, 2009, para. 1)