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- All Subjects: Transportation
- All Subjects: Introduced animals
- All Subjects: Legislation
- Creators: Pima County (Ariz.). County Administrator's Office
- Creators: Hoffman, Dennis L.
- Creators: Arthur, Chester A.
- Creators: Maricopa County (Ariz.). Department of Transportation
The State of the System Report is a compilation of the physical inventory and status of the Maricopa County Department of Transportation’s infrastructure. It addresses roadway congestion, traffic safety, low volume road paving, bridges, and pavement conditions. Also, included are recommendations for future improvements within each of the infrastructure categories. The SOS report has been produced annually since 1998.
Letter from Miner Tillotson to Carl Hayden in regards to a request for two small blue spruce trees from the North Rim.
Provides an inventory of infrastructure resources in the Upper Santa Cruz subregion of Pima County.
Provides an inventory of infrastructure resources in the southeast subregion of Pima County.
Provides an inventory of infrastructure resources in the northwest subregion of Pima County.
Provides an inventory of infrastructure resources in the southwest subregion of Pima County.
Provides an inventory of infrastructure resources in the Tucson Mountains / Avra Valley subregion of Pima County.
An assessment of the problems that are presented by non-native and introduced species in maintaining native species and natural systems. Divided into two major sections, the study covers representative ecosystems in Pima County as well as representative species that have a negative impact on native species.
A companion to the study issued on July 5, 2000 entitled 'Cactus Ferruginous Pygmy-Owl Investigations in Pima County.' The major objective was to determine whether pygmy-owls chose nest sites or perch trees with characteristics that differ from other available sites within a nesting territory.