This geologic map database and report represent a new geologic map compilation of the four 1:100,000 scale geologic maps that encompass the Phoenix metropolitan area. This compilation includes new mapping of the deposits associated with the major river systems (Salt, Gila, Verde, Agua Fria, and Hassayampa) and their largest tributaries (New River, and Skunk, Cave and Queen Creeks). In addition, mapping of deposits of smaller tributaries was improved in many parts of the map area. We made minor revisions of existing bedrock mapping, primarily along boundaries between previous compilation maps, and merged similar bedrock units into a simplified set of units. The primary purpose of this compilation is to depict geologic units that have been and are being exploited for aggregate resources in a uniform and fairly simple manner. This supports efforts of local governments to include aggregate resources in their land management planning, as mandated by state law. These data should also serve as useful reconnaissance tools for aggregate producers when they evaluate potential future resources.