The LiDAR data for this Jefferson County, Illinois auto-generated 2 foot contours project was acquired on March 09, & March 10, 2012 with a Leica Aerial LiDAR Sensor. The LiDAR data was delivered in 632 LAS tiles and 12 blocks of 2foot contour data in .dwg file format. The project coordinates are in Illinois State Plane, East Zone, North American Datum (NAD) 1983 with the elevations based on Mean Sea Level (MSL) North American Vertical Datum (NAVD) of 1988.