This report presents the results of both a qualitative and quantitative analysis of the drainage problems associated with the South Branch, Upper Carmack watershed. Also included is an economic assessment of the damage potential associated with three distinct storm events.

Describes the evolution of transportation routes and transportation methods in Pima County throughout time, and the effect that modes of transportation have had on the size and form of the community. Stage, freight, and railroad transportation followed the main historic corridors established by previous cultures and technologies.