Расчет коэффициента естественной зарегулированности стока рек Калининградской области по результатам наблюдений 2020 г.

Abstract

Effective management of water resources in the river basin is impossible without information about the intra-annual distribution of runoff and its regularities. To analyze the intra-annual distribution of river discharge, graphs of the change in flow over time and curves for the provision of average daily discharges are used. The share of the basic runoff in the year under consideration is estimated using the coefficient of natural flow regulation (CNFR). The CNFR is taken into account when solving engineering and scientific problems. The value of CNFR is determined according to the graph of the supply curve for average daily expenses or by another approximate method. This article uses a previously developed method for calculating CNFR in the Mathcad environment. The values of CNFR for the rivers of the Kaliningrad region are calculated based on the results of observations of average daily discharges in 2020 obtained from the Automated Information System for State Monitoring of Water Bodies of the Russian Federation for eight hydrological posts. It has been established that 2020 in the Kaliningrad region was characterized by low water content. Under these conditions, the CNFR of the rivers of the region turned out to be noticeably higher than that of the rivers of the North-West of Russia. The exception was the rivers Instruch and Zlaya. It is determined that CNFR has a close stochastic relationship with the ratio of the average and maximum flow of this river. The growth trend of CNFR can be traced with an increase in the area of the catchment area.