Surveyors and GIS professionals use drones because they make the process of creating accurate, 3D topographic maps easier, safer, and more efficient. Use cases are land surveying, cadastral maps, topographical surveys, precise measurements, land management and development, and urban planning. While other survey methods require significant time spent on the ground at a location, drone surveys can be done in stealth mode (almost unnoticed), making them a less intrusive survey solution.