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This data release contains three different estimates of road deicing salt applications, which utilize different sources of deicing salt data, and climate, land cover, and imperviousness data to provide spatially distributed estimates of deicing salt application for states covering the Delaware River Basin from water and calendar years 2001 through 2023 at a 30-meter spatial resolution. This data release includes five supplemental files: 1) awssi.csv 2) Mineral_Salt_Rock.csv 3) Mineral_Salt_Solar.csv 4) ClearRoads_Salt.csv 5) DRB_WBD_LL.zip And three child items with gridded time series of road salt de-icing estimates: 1) Calendar Year Deicing Salt Estimates using USGS Mineral Commodity Data 2) Seasonal Deicing Salt Estimates using Clear Roads State Winter Maintenance Survey Data 3) Seasonal Deicing Salt Estimates using USGS Mineral Commodity Data See the metadata for each child item for more details.