KHOLODENKO V.S., BASІUK T.O., KHOLODENKO A.O., GOPTSIY M.V. RESEARCH ON THE LONG-TERM DYNAMICS OF THE WATER BALANCE COMPONENTS OF THE HORYN RIVER BASIN (BEFORE THE CONFLUENCE OF THE SLUCH RIVER)
DOI: https://doi.org/10.17721/2306-5680.2025.3.5
Hydrology, Hydrochemistry and Hydroecology. 2025. № 3(77)
Publication language: Ukrainian
Authors:
Kholodenko V.S., National University of Water and Environmental Engineering
Basіuk T.O., National University of Water and Environmental Engineering
Kholodenko A.O., Rivne Institute of Kyiv University of Law of the National Academy of Sciences of Ukraine
Goptsiy M.V., Taras Shevchenko National University of Kyiv
In Ukraine, a gradual process of reforming the water resources management system is underway, the purpose of which is to achieve its compliance with the developments of the modern management system implemented in the European Union. The main principles of which are highlighted in the EU Water Framework Directive and the Water Strategy of Ukraine for the period up to 2050. An important object in them is water resources, in particular, the characteristics of the river basin, one of which is the river runoff. River runoff is subject to change due to the influence of various factors (climatic, anthropogenic). The relationship between river runoff, runoff layer and precipitation with the water balance component has been studied. The research methodology is built in the direction of applying the hydrological-genetic and statistical method, the agro-hydrological model of river basins of Ukraine has been used. Tables of initial data of observation series of average annual water discharge, runoff layer and precipitation on the Horyn River (excluding the Sluch River) have been formed; an approach was chosen and a calculation basis was carried out for studying the dynamics of changes in river runoff, runoff layer and precipitation; surface graphs were constructed; the coefficient of uneven precipitation was calculated; water balance components in the Horyn River basin (excluding the Sluch River) were studied. It was established that the river runoff, runoff layer and precipitation are decreasing in dynamics. The water balance components of the Horyn River basin (excluding the Sluch River) show a tendency to accumulate moisture by 324 mm, due to the incoming part, namely precipitation. The expenditure component of the water balance is 756 mm, which does not exceed the incoming part (1080 mm), and is mainly carried out due to evaporation and transpiration from water surfaces and plants. Surface graphs show a close interdependence of river runoff, runoff layer and precipitation. The average indicator of uneven precipitation fluctuates within small limits.
Keywords: Horyn River; river runoff; runoff layer; precipitation; water balance.
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HOW TO CITE
Kholodenko, V.S., Basіuk, T.O., Kholodenko, A.O., Goptsiy, M.V. (2025). Research on the long-term dynamics of the water balance components of the Horyn River basin (before the confluence of the Sluch River. Hidrolohiia, hidrokhimiia i hidroekolohiia [Hydrology, Hydrochemistry and Hydroecology], 3(77), 57-68. (in Ukrainian, abstr. in English). https://doi.org/10.17721/2306-5680.2025.3.5