The proposed research is a collaboration of DOI (USGS, BLM, USFWS), USDA (PNW, USFS), and state agencies. State Heritage and other Nongame Programs have already shared their data with us in preparation for this study. This includes almost all 11 western states (some states did not record reptile occurrences). In exchange for this information, we will be providing to the states: (1) comprehensive species occurrence data with data record corrections; (2) maps of lizard and snake hotspots within each state; and (3) spatial models of species occupancy, including predicted changes in distribution under future climate scenarios. We will work with state (fish and game, state lands) and federal (BLM, USFWS, USFS) partners during the release of preliminary results to ensure that products covering predicted distribution and conservation prioritization meet their needs.