Describes a number of streams within watershed planning units and prioritizing these streams according to their existing contribution to the overall conservation of biological diversity in Pima County. Over 50 percent of the priority streams within the County are found within the Altar Valley and the Cienega Rincon area.

Sun Corridor: A Competitive Mindset builds upon the 2008 Megapolitan report by looking at present and future prospects for the Sun Corridor, the economic heart of Arizona stretching along Interstate 10 from Phoenix to Tucson, down Interstate 19 to the Mexican border.