LiDAR data for Jefferson County was collected by Pictometry International on June 23, 2009. Pictometry processed the raw point cloud data to ensure proper alignment of data between flight lines. The data was then classified for “Ground” by using a series of automated filters in TerraSolid software to remove above ground vegetation and buildings. Points in water and on bridges were manually removed from the Ground class. The data was then tiled and saved in the industry standard LAS format. The quality control for LiDAR data was performed by Groundpoint Technologies LLC.