New Insights on Flood Mapping Procedure: Two Case Studies in Poland

Andrea Petroselli, Jacek Florek, Dariusz Młyński, Leszek Książek and Andrzej Wałęga
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Andrea Petroselli: Department of Economy, Engineering, Society and Business (DEIM), Tuscia University, Via San Camillo De Lellissnc, 01100 Viterbo, Italy
Jacek Florek: Department of Hydraulics Engineering and Geotechnics, University of Agriculture in Krakow, St. Mickiewicza 24–28, 30-059 Krakow, Poland
Dariusz Młyński: Department of Sanitary Engineering and Water Management, University of Agriculture in Krakow, St. Mickiewicza 24–28, 30-059 Krakow, Poland
Leszek Książek: Department of Hydraulics Engineering and Geotechnics, University of Agriculture in Krakow, St. Mickiewicza 24–28, 30-059 Krakow, Poland
Andrzej Wałęga: Department of Sanitary Engineering and Water Management, University of Agriculture in Krakow, St. Mickiewicza 24–28, 30-059 Krakow, Poland

Sustainability, 2020, vol. 12, issue 20, 1-17

Abstract: The use of the Mike11 one-dimensional (1D) hydraulic model, together with official hydrology, represents a standard approach of the National Water Management Authority (NWMA) in Poland for flood mapping procedures. A different approach, based on the hydrological Event-Based Approach for Small and Ungauged Basins (EBA4SUB) model and the Flood-2 Dimensional (FLO-2D) hydraulic model has here been investigated as an alternative procedure. For the analysis, two mountainous rivers in Poland were selected: Kamienica Nawojowska is characterized by a narrow valley, while Skawinka has a broad valley. It was found that the flood zones can enormously differ locally, with larger zones generated by the Mike11/NWMA model in some cases and by the EBA4SUB/FLO-2D model in other situations. The benefits of using the two-dimensional (2D) model are consistent in areas without drainage and where the connection to the main channel is insufficient. The use of 1D modeling is preferred for the possibility of mapping the entire river network in a short computational time.

Keywords: flood hazard zone; EBA4SUB model; FLO-2D; Mike11 (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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