Application of Geoinformation Technologies for Modeling the Movement of Water in the River Network of the Selected Area

The mathematical model of fluid movement in an open pseudo-prismatic channel is considered. A variational statement of the problem was formulated, which was solved by the finite element method. This problem is partially considered for the movement of water in the river basin. At each section of the river network, the channel characteristics may change, among which the angle of inclination of the middle bottom line plays an important role. The results are verified on test cases with complex bottom topography and show the influence of the choice of basis functions on the accuracy of the solutions and the calculated orders of convergence for temporal and spatial variables. Also, a GIS component was developed on the real part of the river basin, which allows showing the volume of water and the fullness of the channel in real time. By measuring the amount of precipitation in a given area, we can predict the fullness of the river bed, and this allows us to prevent critical water rises in the rivers of the selected basin and prevent such critical phenomena as floods, overflows of the river, inundation of adjacent territories. This contributes to the development of mountainous regions and the planning of production and industrial processes in them.