Cook_County_GISThe DEM of Cook County was developed from the DEM tiles that were delivered after the 2022 LiDAR acquisition. This DEM assembles all the tiles into one raster. It displays the bare earth returns of the LiDAR as a raster. There were no data values recorded in the Lidar for a small area of the Calumet Shores Gull Island wetland. The lidar is intended to return surface elevation for waterbodies; however in this instance there is a reflectance error. A corrected value for the surface elevation of 579.26 was calculated using a constant value raster. The original 3 tiffs are available (18508225.tif,18508250.tif, 18758250.tif).ArcGIS ImageMapLayerhttps://hub.arcgis.com/datasets/5ff0bf2707854717a3fe7a57f368ab4cengCook CentralPublicCook County Digital Elevation Model (2022) [Illinois--Cook County]Web servicesIllinois--Cook CountyIllinois2022