On the question of calculating the ratio of the volume of surface water runoff, the hydro potential of foothill areas and the total amount of precipitation

Abstract

The article is devoted to the analysis of the ratio of the volume of surface runoff, the hydro potential of the foothill landscape and the total amount of precipitation. A critical analysis was carried out using a well-known method for determining the quantitative assessment of surface runoff at given values of total precipitation and hydrological potential of the terrain of the landscape. The purpose of this work is to identify the ambiguity of the results obtained using a well-known technique and to develop a graph-analytical method for calculating the main indicators of the hydro regime of the foothill landscape. Research methods. The well-known CN curve method used to calculate surface runoff in foothill basins of landscapes is used as a base method. The results obtained. A graph-analytical method has been developed to calculate the required amount of precipitation for given values of hydrological retention indicators. Conclusions. The proposed method can be used in hydrological calculations in order to predict the expected surface runoff of areas of the foothill landscape.