The La Paz County Comprehensive Plan is the first overall plan for development countywide. Due to the passage of new state requirements and a desire to plan for the future, the La Paz County Board of Supervisors contracted with Partners for Strategic Action, Inc. to develop the county’s first comprehensive plan. The consulting team was directed to solicit broad community participation, study the county planning area, and develop a plan that would be an easy-to-understand policy document that will guide La Paz County’s development in the future.

Concern has been expressed that mesquite bosques are disappearing or diminishing in quality, and that the survival of the mesquite mouse is consequently threatened. This study, funded by a grant from the Arizona Heritage Fund to the Pima County Regional Flood Control District, investigated the current distribution of the mesquite mouse by reviewing historical records from museum specimens, examining existing potential habitat at historic locations of the species and elsewhere in the county, and conducting a live-trapping study at 19 sites representing a range of ecological communities with mesquite as a major component.

This report is one of several from Statistical Research Inc. written to develop the Cultural and Historic Resources Element of the Sonoran Desert Conservation Plan. Divided into four parts, the report summarizes available information that reflects the experience of (1) ancient peoples of Southern Arizona; (2) indigenous peoples; (3) non-indigenous peoples of the historical period; and (4) Pima County today.