There is a growing concern about the safety of dams and dikes in modern society [...]

This paper provides an overview of structural and non-structural alternatives for accommodating larger floods at dams. The first two alternatives discussed, raising the height of the project and/or lowering the reservoir pool, can be used to prevent overtopping by increasing the available floodwater detention storage in the reservoir. Data gathered by an ASCE task committee survey on modificati...

A computationally efficient approximate analytical solution based on the classic solution for diffraction about a semi-infinite breakwater, is developed to assess the wave energy shadow down-wave of a single row array of overtopping type wave energy converters approximated as partially transmitting breakwater segments. The approximations associated with the solution are mitigated by a compariso...

This study carried out a transient wave overtopping and overflow modeling to improve the accuracy of simulated inundation due extremely large storm surges, like in worst-case scenario tsunami. Preparing an hazard map for such extreme surges is essential risk management evacuation plan. Since existing studies considering phenomena are scarce, present proposes using two kinds models that integrat...

The varved sediment record from glaciallyfed Lake Tuborg, Ellesmere Island, Nunavut, shows that only three large jökulhlaups have occurred there in the last millennium: 2003, 1993, and 1960. Detailed analyses of sediment microstructure and particle size, combined with in-situ hydrometeorological and limnological process studies, allowed jökulhlaup facies identification and discrimination from d...

The Netherlands is a highly urbanized area. In addition to flooding from the sea due to storm surges and high water discharges from rivers, flooding from major lakes is also a threat. Since 2011 there is a new system in operational use (24 hours per day, 7 days per week), for the prediction of flooding at Lake IJssel, Lake Marken, and the lakes bordering them. This system, RWsOS Meren (Genseber...

Worldwide 83% of large dams are embankment structures (ICOLD, 1984), and the proportion is even greater for small dams. Embankment overtopping and breach is an important issue, and the Discusser congratulates the Author for his worthwhile contribution which complements the comprehensive study of Coleman et al. (2002). This discussion is focused on the breach development stage. It is shown that ...