Digital terrain models (DTMs) are geospatial datasets that model the topography of the Earth’s surface in a digital environment. They are typically constructed from another source of geospatial data such as LiDAR, photogrammetry, or terrestrial laser scanning (TLS). A DTM is a useful GIS dataset for a variety of operations and activities; this is especially true when your organization has limited field resources to collect survey information. By using lidar to create your DTM, you can unlock several benefits. Let’s take a look at three benefits of creating a DTM using lidar.