Land ownership, including the percentage of ownership by category, for the Western Mexican Drainage Basin is shown in Figure 7.10-2.  The principal feature of land ownership in this basin is the large proportion of National Wildlife Refuge lands.  A description of land ownership data sources and methods is found in Volume 1, Appendix A.  More detailed information on protected areas is found in Section 7.0.4.  Land ownership categories are discussed below in the order of largest to smallest percentage in the basin.

Wildlife Refuge

• 61.1% of the land is federally owned and managed by the U.S. Fish and Wildlife Service as the Cabeza Prieta National Wildlife Refuge.
• Land uses include resource protection and recreation.

National Park Service (NPS)

• 36.3% of the land is federally owned and managed by the National Park Service as the Organ Pipe Cactus National Monument.
• Land uses include resource conservation and recreation.

U.S. Military

• 2.2% of the land is federally owned and managed by the U.S. Military as the Barry Goldwater Air Force Range.
• Primary land use is military activity.

Indian Reservation

• 0.2% of the land is under tribal ownership as the Tohono O’odham Indian Reservation.
• Tribal lands are located along the eastern basin boundary
• Primary land use is grazing.

State Trust Land

• 0.1% of the land is held in trust for the public schools under the State Trust Land system.
• State trust land is found in the eastern portion of the basin surrounded by the Organ Pipe Cactus National Monument.
• Primary land use is resource conservation.

Private

• 0.1% of the land is private.
• All private land is in the vicinity of Lukeville, however, it cannot be seen at the map scale shown.
• Land uses include domestic and commercial.

Figure 7.10-2 Western Mexican Drainage Basin Land Ownership

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References and Supplemental Reading for the Western Mexican Drainage Basin