Over the next few months, the DNR will begin mapping the state using LiDAR, a state-of-the-art mapping technology. Check back often to view the DNR's progress and view new LiDAR maps.

What is LiDAR? LiDAR, which stands for Light Detection and Ranging, is a new technology that creates an interactive topographic map with elevation data accurate within eight inches. Current data has an accuracy of within five feet. LiDAR is a process of scanning the earth with lasers from an aircraft to obtain accurate elevations.

LiDAR is similar to sonar in that it measures distance by the time it takes for the laser to reach the ground and bounce back to the aircraft.

As a supplement to field surveys, LiDAR can be used to plan for road construction, other construction sites and conservation farming practices. It can also be used to evaluate alternative infrastructure options, for education and research purposes, and in engineering.