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  • CR4.13 Tumamoc Hill Acquisition

    Total Actual Cost: $1,353,449
    Project Number:  CSUTUMAMO
    Funding Sources:  2004 General Obligations Bonds 
    Completion Date: June 2019
    Managing Dept.: Sustainability & Conservation: Cultural Resources & Historic Preservation 
    Project Map: GIS Map

    In 2007 Pima County acquired an iconic land parcel from the Arizona State Land Department measuring 277 acres and encompassing the western flank of Tumamoc Hill, a site recognized for its exceptional natural cultural and archaeological values and its national significance as a research station since 1903. The significance of the Carnegie Desert Laboratory has been recognized through its designation as a National Historic Landmark in 1965, its listing in the National Register of Historic Places in 1966, and its identification as both a National Environmental Study Site in 1976, and Arizona State Scientific and Educational Natural Area in 1981.

    The acquisition included historic botanical research plots associated with the 1903 Carnegie research facility near the top of the hill, archaeological resources associated with a prehistoric ancestral O’odham village, and the remains of villagers’ (considered the Hohokam cultural tradition) ancient agricultural systems. The site is considered ancestral to Tribes in the area, including the Tohono O’odham, Akimel O’odham and the Hopi.

    The 2004 bond project implemented basic management and protective actions to ensure preservation of cultural and natural resources in the Tumamoc Hill Preserve- those vulnerable to impacts from utility maintenance and illicit activities related to trespassing. Protective actions included compiling background studies, updating inventories identifying the historic and cultural resources to be preserved under County management, detailed site mapping, and development of a comprehensive geo-database for use in GIS modeling of the site locality and culturally sensitive areas.

    Limited signage has been produced to interpret the resources and the history of the area. The project is now considered complete with the production of the interpretive sign in June 2019 and continued monitoring efforts by staff.
    western property boundary, looking eastview facing southinterpretive signage
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