Izvestiya of Saratov University.
ISSN 1819-7663 (Print)
ISSN 2542-1921 (Online)


geoinformation modelling

Construction of a Hydrologically-correct Digital Terrain Model (Using the Example of Saratov Region)

The article provides an algorithm for constructing of hydrologically correct digital terrain model. The main thematic terms and definitions are given. The construction of watercourse network on the territory of Saratov region and construction of watershed basins has been carried out by GIS-technologies. An algorithm for constructing flood zones of the territory has been developed to identify the most vulnerable objects.