o:244 Long-term runoff variability analysis of rivers in the Danube basin en Abstract: The long-term runoff variability is identified to consist of the selected large rivers with long-term data series in the Danube River Basin. The rivers were selected in different regions of the Danube River Basin and have a large basin area (Danube: Bratislava gauge with 131,338 km2; Tisza: Senta with 141,715 km2; and Sava: Sremska Mitrovica with 87,966 km2). We worked with the station Danube: Reni in the delta as well. A spectral analysis was used to identify the long-term variability of three different types of time series: (1) Average annual discharge time series, (2) Minimum annual discharge time series and (3) Maximum annual discharge time series. The results of the study can be used in a long-term forecast of the runoff regime in the future. Keywords: long-term discharge analysis, spectral analysis, Danube River Basin 1552099 10.2478/ahr-2021-0008 1552101 1336-2563 1552102 https://jahr.sk/uploads/10.2478_ahr-2021-0008.pdf 2022-05-10T10:01:58.109Z 44 yes 46 Pavla Pekárová Institute of Hydrology of the Slovak Academy of Sciences, Bratislava Jakub Mészáros Institute of Hydrology of the Slovak Academy of Sciences, Bratislava person Pavol Miklánek Institute of Hydrology of the Slovak Academy of Sciences, Bratislava person Ján Pekár Comenius University in Bratislava, Slovakia person Stevan Prohaska Jaroslav Černi Water Institute ; Institut za vodoprivredu "Jaroslav Černi" person 0000-0002-2570-1538 Aleksandra Ilić Univerzitet u Nišu ; University of Niš, Serbia person application/pdf 2676665 https://unilib.phaidrabg.rs/o:244 no yes 1 70 92000001 71A04 Acta Horticulturae et Regiotecturae – Special Issue Nitra 24 37 44 Nitra, Slovaca Universitas Agriculturae Nitriae 2021 Published Online: 21 May 2021