Digital Terrain Model (DTM)

A Digital Terrain Model (DTM) is a digital representation of the Earth's ground surface, showing its natural features without any objects like buildings or trees. It uses a grid of points, each with a elevation value, to accurately depict the terrain's shape and elevation. DTMs are essential for applications such as land surveying, flood risk assessment, infrastructure planning, and environmental management, providing precise information about the surface topography for analysis and decision-making.