This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Faculty of Civil Engineering and Architecture, University of Nis, Niš, Serbia
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Faculty of Civil Engineering, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
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Faculty of Forestry, University of Belgrade, Belgrade, Serbia
Tuscia University, Viterbo, Italy
Regional analysis is often used for flood quantile estimation in ungauged catchments. The regionalization procedure has two phases: the formation of homogeneous regions and flood quantile estimation. The presented research results consider the first phase of the regional analysis for 41 catchments in Serbia. The catchment similarity attributes are catchment area and catchment mean elevation. The number of formed regions and the number of stations within the regions are determined by maximising the mean silhouette width of the region. Regions were first obtained by cluster analysis and then adjusted to comprise catchments with a positive silhouette width. For the three formed regions, homogeneity was checked by the Gini index - GI.
This research was partially funded by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia, grant numbers 451-03-65/2024-03/ 200095, and 451-03-65/2024-03/ 200169
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