 | | Sierra Vista, Arizona | | Includes Bisbee, Nogales, and Benson | |
| | Wildlife Preserves & Refuges | | |
| | San Bernardino National Wildlife Refuge | | Situated at 3,720 to 3,920 feet elevation in the bottom of a wide valley, the refuge encompasses a portion of the headquarters of the Yaqui River, which drains primarily western Chihuahua and eastern Sonora, Mexico. . |
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