After successful completion of the course, students are able to calculate digital surface and terrain After positive completion of the course, students are able to calculate digital surface and terrain models as well as orthophotos based on data from laser scanning and stereo photogrammetry and to analyze and visualize them. Students have knowledge of the basic techniques for acquiring topographic and hydrographic data and can apply different interpolation methods depending on the data situation. They can program simple interpolation approaches themselves and are also able to display and analyze topographic and hydrographic data in GIS programs and assess their quality. The students know how to access nationally and globally available data sets, how to use them and how to apply them as a basis for individual questions in environmental engineering.