2024 , Volume 29, № 3, p.25-37

The article addresses the experience gained while processing data on the topography of water bodies, such as the Irkutsk reservoirs and the Angara River and Lake Baikal, in order to obtain a model that combines data from various sources, such as topographic and pilot maps, results of depth measurements with an echo sounder, contours of coastlines obtained from remote sensing data and aerial photography. The authors have considered algorithms developed for processing such data, which are based on the construction of triangulations. In addition to the actual algorithm for constructing the Delaunay triangulation with restrictions on vector data of various origins, the following algorithms have been implemented: removal of triangulation artifacts built on the contours of the topography and morphing of maps to match the underwater and surface parts of the topography, replacement of the triangulation fragment. The resulting model contains all the information on the topography of the examined area and allows using it for further hydrological calculations and analysis of the studied reservoirs sectors.