On impact of multiple reservoirs on flood frequency at the catchment scale based on the concept of equivalent reservoir

Código

I-EBHE0214

Autores

Elena Volpi, Stefano Cipollini, Aldo Fiori

Tema

WG 1.10: Hydrologic Design - Solutions & Communication

Resumo

Factors affecting the probability distribution of floods include climate change, land use change, and the construction of infrastructure that alters the generation and propagation of floods. Among such infrastructures, reservoirs play an important role due to their storage capacity, also depending on their purpose and operation. The impact of reservoirs on flood frequency depends on the characteristics of the reservoir, but also on climatic and geomorphological factors that represent meteorological forcing, runoff generation and flood propagation within the river network. The presence of multiple reservoirs at the catchment scale further complicates their assessment, especially when addressed using detailed hydrologic-hydrodynamic simulations. We discuss here about the local and regional assessment of reservoirs on flood frequency using a simple but physically based modeling approach R based on the concept of equivalent reservoir (Cipollini et al., 2022, 2023). The application of the method is very simple, with a limited set of relevant parameters, involving both the catchment and the reservoir system.