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.

The Pima County Outside Agency program provides funding to non‐profit entities to serve economically and socially disadvantaged populations through social service programs. The Pima County Board of Supervisors establishes funding limits for the program and grants are awarded to agencies through a public committee process.

The Sutherland Valley is a broad, geologically-controlled floodplain. This study attempts to quantify the depth and extent of flooding so that floodplain permits can be issued for development which meets local and federal restrictions.

This Technical Data notebook has been prepared for the Picture Rocks area located in Pima County, Arizona. The objective of the TDN is to provide regulatory discharge rates and identify floodplain hazard area along in the Picture Rocks study area using better topographic, hydrologic, and hydraulic data.