Description: The United States was divided and sub-divided into successively smaller hydrologic units. Each hydrologic unit is identified by a unique hydrologic unit code (HUC) consisting of eight digits.
Known Errors/Qualifications: ****NOTE**** This map has been through rubber sheeting processes and should be used for statewide planning purposes only.
Spatial Domain: State of Arizona
Rectified: source map
Maintenance Format: Coverage
Primary Source Organization: Arizona State Land Deptartment
Primary Source Document: hucs
Primary Source Date: 20000607
Primary Source Scale: 24000
Secondary Source Organization: US Interior Dept. / US Army
Secondary Source Document: Hydrologic Unit Map - 1974 State of Arizona
Secondary Source Date: 1974
Secondary Source Scale: 500000
Secondary Source Format: Paper
GIS Contact: John Regan
Service Item Id: e5436fa0bca24ff196b5192366117ed6
Copyright Text: Pima County Information Technology Department - Geographic Information Systems
201 N Stone Ave., 9th Floor
Tucson, AZ 85701