ECULIARITIES IN DIGITAL DESCRIPTION OF TOPOGRAPHIC LOW WHILE MODELING THE SURFACE OF THE DRAINAGE BASINS

Abstract

Every year in the world, man-made disasters occur at hydraulic structures caused by design errors and insufficient consideration of the influence of natural factors (heavy rains, floods, heavy snowmelt, etc.). The problem can be solved at the design stage by preliminary preparation of the initial data of digital elevation models used while modeling in geographic information systems. It was established that the use of the method of determining the optimal path for filling the drainage depressions, proposed by L. Wang and H. Liu, provides high accuracy in calculating the boundary of the catchment area of river basins and can be used in determining the parameters of the river network, as well as obtaining data on the value of surface runoff