Estimates of Road Salt Application across the Conterminous United States, 1992-2019 (ver. 2.0, August 2023)

Annual estimates of road salt application were developed for the conterminous United States for the calendar years 1992 through 2015. The final estimates (in pounds) were derived from several data sources, which include road density and proportion of developed land use, depth and spatial extent of long-term snowfall, and the production and distribution of salt sources by state. The extent is the conterminous United States, and the spatial resolution is one-square kilometer.