A Spatial Model for the Calculation of Hydrographs of a Flood Runoff of Water and Sediments from Small Catchments of a River

This work is devoted to a spatial model flood runoff and its use for the calculations of sediments washing by a water runoff fro m a surface of river catch ments on a basis of Zakapathians water-balance station databases. Questions of adaptation of a spatial model to the conditions of the Ukrainian Carpathians, development of a co mplex approach to a mathematical simu lation of process formation of a rain flood and suspended sediments washing by a water runoff are described in this investigation too. A brief description of a structure of a flood runoff spatial model and its use for calculations of hydrographs of runoff sediments fro m a surface of a basin of Rika are given in this art icle. A total amount of floods was about 60 in this paper. Only 36 floods among them have been selected to optimize. So me optimu m parameters of a spatial model after th is were connected with the physic-geographical characteristics of the catchments, such as an average forest cover, catchment area and etc. A quality of calculated hydrographs in 83.4% of these cases was evaluated as satisfactory, half of them were qualified as good and 16.6% that remind was classified as poor.