Arizona Resources

• AZGEO Clearinghouse: Catalog of Arizona GIS data that have been collected from various state and local agencies and organizations.
• ADHS Community Profiles Dashboard: Maps, tables, and downloadable data created by the Arizona Department of Health Services (ADHS).
• ADWR GIS Data and Maps: Downloadable GIS datasets created by the Arizona Department of Water Resources (ADWR).
• Arizona State Land Department (ASLD) Parcel Viewer: Interactive map with information on land parcels managed by the Arizona State Land Department (ASLD).
• HabiMap Arizona: Interactive map with wildlife data collected by the Arizona Game and Fish Department (AzGFD). Map requires Adobe Flash Player.
• MAG Map Viewers: Links to multiple county and statewide interactive maps maintained by the Maricopa Association of Governments (MAG).
• UofA DroughtView: Web map to visualize the impacts of drought on Arizona.
• UofA Spatial Data Explorer: Searchable catalog of geospatial datasets held by the University of Arizona Library.

Other State Resources

• California Geoportal: Maps and data for California.
• California Open Data Portal: Open geospatial datasets for California.
• Colorado Open Data Catalog: Open geospatial datasets for Colorado.
• ColoradoView: Access to remotely-sensed imagery for Colorado.
• Denver Regional Data Catalog: Open geospatial datasets for the Denver, CO area.
• New Mexico RGIS: New Mexico's geospatial data clearinghouse.
• Utah Automated Geographic Reference Center: The Automated Geographic Reference Center (AGRC) is Utah's geospatial data repository.

Nationwide Resources

• Data.Gov: Federal open data repository. Includes geospatial datasets.
• FCC Maps: Federal Communications Commission (FCC) maps, including information on broadband deployment.
• USFS FSGeodata Clearinghouse: Geospatial data clearinghouse for the US Forst Service.
• Microsoft Open Data US Building Footprints: Open source dataset of over 100 million computer generated building footprints in all 50 US states.
• National Geologic Map Database MapView: View and download publications regarding geological datasets.
• National Historical Geographic Information System (NHGIS): Source of current and historical census data.
• USGS National Map: Collection of various datasets from the USGS and various other agencies.
• USGS ScienceBase Catalog: A collaborative scientific data and information management platform.

Cartography Resources

• ColorBrewer: Useful site for finding map color combinations.
• NAPSG Symbol Library: Downloadable symbols for creating incident maps
• Visualizing Map Projections: Large image that allows users to quickly see the differences between various map projections.