Flood risks in regularized watersheds: Case study of the flood in the Mondego River, Portugal
DOI:
https://doi.org/10.5902/2179460X63586Keywords:
Return period, Watersheds, ReservoirsAbstract
Hydrological studies of flooding in watersheds with a high hazard of inundation are important for mitigation and prevention methodologies. The Mondego river flooding, which occurred in Portugal in 2001, with 460.1 mm total month precipitation around the city of Coimbra, generated great economic and social losses. This study proposed to calculate the flood Return Period (RP) that occurred in 2001 using a methodology developed for the analysis of flood risk in regularized basins. The information used in this analysis was data of precipitation and reservoir average level. The results showed that the 2001 Mondego River flood has an RP of 439.4 years. The combination of precipitation and reservoir data proved to be important to understand the dynamics of floods in a regularized basin. In this sense, the proposed methodology can be applied to any basin that is heavily influenced by upstream reservoirs.
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