A 2011 report produced by Pima County that details natural and cultural resource preservation efforts. 1997 and 2004 bond measures helped fuel Pima County's rather remarkable list of acquisitions (and this list continues beyond 2011!) guided by the Sonoran Desert Conservation Plan.

An incomplete list of areas/acquisitions in this report:

• Bar V Ranch
• Sands Ranch
• Clyne Ranch
• Empirita Ranch
• Colossal Cave Mountain Park Expansion
• Cienega Creek Natural Preserve Expansion
• Marley Ranch Conservation Area
• Rancho Seco
• Sopori Ranch
• Rail M Grijalva Canoa Ranch Conservation Park
• Buckelew Farm
• King 98 Ranch
• Diamond Bell Ranch
• Tucson Mountain Park Expansion
• Sweetwater Preserve
• Acquisitions that Contribute to the Reserve
• Tortolita Mountains
• Wildlife Corridors
• Six Bar Ranch
• A7 Ranch
• Agua Caliente Wash and Tanque Verde Creek
• Pima County's Pima Pineapple Cactus Mitigation Bank
• Fort Lowell
• Mission Gardens at Mission San Agustin del Tucson
• Dakota Wash
• Valencia Archaeological Site
• Los Morteros
• Tumamoc Hill
• Honey Bee Village
• Steam Pump Ranch
• Pantano Townsite
• Black Wash
• Canada del Oro

Source: Conservation Report