Will County has topographic data (contours, breaklines, Lidar LAS point files, digital models) posted for the following years: 2021, 2014, 2007. All Will County, LIDAR data can be downloaded directly from Illinois Geospatial Data Clearinghouse. You can look up topographic data from our website in one of two ways: Contours or LiDAR. Please note these files are larger in size (most are great than 2 GB).