The Atlantic Group provided high accuracy, calibrated multiple return LiDAR for roughly 1,510 square miles covering both Greenville and Spartanburg counties, South Carolina. The nominal pulse spacing (NPS) for this project was 1.4m. Dewberry used proprietary procedures to classify the LAS according to project specifications: 1-Unclassified, 2-Ground, 7-Noise, 8-Model Key Points, 9-Water, 10-Ignored Ground, 11-Withheld Points, 13-Bridges and Box Culverts. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless hydro-flattened DEMs for the 1,029 tiles (5000 ft x 5000 ft) that cover the project area. This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.