Detailed land-cover mapping is essential for a range of research issues addressed by sustainability science, especially for questions posed of urban areas, such as those of the Central Arizona-Phoenix Long-Term Ecological Research (CAP LTER) program. This project provides a fine-resolution land-cover mapping of the CAP LTER study area (greater Phoenix metropolitan area and surrounding Sonoran desert). The mapping is based primarily on 2015 National Agriculture Imagery Program (NAIP) four-band data, with additional supporting data used to improve accuracy. Supporting data include the 2015 cadastral parcel data, the 2014 USGS LiDAR data (1-meter), the 2014 Microsoft/OpenStreetMap Building Footprint data, the 2015 Street TIGER/Line, and the previous NAIP-based land cover map for the year of 2010. Among supporting data, building footprints and LiDAR data significantly improved the boundary detection of above-ground objects.