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.

This LOMR will address changes to the regulatory flood plain as currently mapped. This Technical Data Notebook contains all the information required in support of this request, including the applicable Federal Emergency Management Agency forms.