Slovenia, rich in water resources, faces numerous challenges in managing torrential areas due to increasingly frequent heavy rainfall. The hydrological model ZEMOKOST, validated on measured flows, is presented as a tool used in the Alpine region for forecasting high water levels and planning measures to mitigate the harmful effects of water. The main research hypotheses include examining the impact of precipitation volume and intensity on the differences between model predictions and measured flows. The research was conducted in the Pahernik estate and Osankarica area on Pohorje. Flow measurements were performed using the dilution method and the installation of Parshall flumes. At the Pahernik estate, precipitation data were collected from an automatic meteorological station located at the center of the research area, while for Osankarica, data from the Rogla meteorological station were used. The results showed that the ZEMOKOST hydrological model accurately predicts peak runoff, as well as runoff variations throughout the duration of a rainfall event. The differences between the modeled runoff predictions and measured runoff are influenced by the amount and intensity of precipitation, as discrepancies between modeled and measured runoff are greater for smaller rainfall events, whereas they decrease for larger precipitation events.
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