Surdex CorporationThis project involved fixed wing aerial LIDAR data collected at a contracted point spacing of 1.0 meters for the Illinois Counties of Jefferson and Marion totaling approximately 1,215 square miles.Shapefile07397fe5-3086-40f3-9559-8ddc1911ac15engIllinois Geospatial Data ClearinghousePublicHeight Modernization (ILHMP) LiDAR Data [Jefferson County, Illinois] (2015)DatasetsIllinois--Jefferson CountyIllinois2015