B. Management Practices and Uses of Public Lands The 28 million acres of public lands in the study area are used for a multiplicity of purposes. A brief description of the principal uses in as follows: Rangeland for Domestic Livestock and Wildlife: Nearly 1,500 grazing permittees and leases utilize approximately 1,000,000 AUMs of feed annually to graze cattle and sheep on the public lands. Many thousands of big game animals also utilize the public lands. Grazing privileges on the public lands have been established for meet of the basin on the basis of permanent water distribution and water ownership or control. Nearly all surface waters are appropriated by farmers or livestock users under State laws. Federal range privileges are also gra...