Analysis of maximum runoff volumes with different time durations of flood waves on the Topľa River

Year, pages: 2018, 244 - 255

In applied hydrology, it is problematic to assign the flood wave volume values with a certain probability of exceedance to given corresponding T-year discharges. This dependence is highly irregular, and requires to knowledge of the flood wave course of the given probability exceedance. For this reason, this paper deals with the determination of the annual maximum discharge volumes on the Topľa River for the time duration of 2-, 5-, 10-, 15- and 20-days (Vtmax). The series of 84-years (1931–2015) mean daily discharges of the river Topľa at Hanušovce nad Topľov station was used to calculate the maximum annual volumes of runoff of the river Topľa. Subsequently, the theoretical curves of exceedance of the maximal discharge volumes Vtmax were determined by the Log-Pearson distribution of the Type III. This type of probability distribution is used to estimate maximum (extreme) values across a range of natural processes. The results showed relatively small differences in estimated T-year volumes with comparison of other types of theoretical distribution functions used in hydrological extreme analyses in Slovakia. The second part of the paper is focused on the analysis and statistical evaluation of the interdependence and occurrence of maximum discharges and volumes with different time duration using the copula functions.

Bačová Mitková, V., Pekárová, P. 2018. Analysis of maximum runoff volumes with different time durations of flood waves on the Topľa River. In Acta Hydrologica Slovaca, vol. 19, no.2, pp. 244-255. 2644-4690.

Bačová Mitková, V., Pekárová, P. (2018). Analysis of maximum runoff volumes with different time durations of flood waves on the Topľa River. Acta Hydrologica Slovaca, 19(2), 244-255. 2644-4690.