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This reprintshows recent advances in dam safety related to overtopping and the prevention, detection, and risk assessment of geostructural risks. Related to overtopping, the issues treated are: the throughflow and failure process of rockfill dams; the protection of embankment dams against overtopping by means of a rockfill toe or wedge-shaped blocks; and the protection of concrete dams with highly convergent chutes. In the area of geostructural threats, the detection of anomalies in dam behavior from monitoring data using a combination of machine learning techniques, the numerical modeling of seismic behavior of concrete dams, and the determination of the impact area downstream of ski-jump spillways are also studied and discussed. In relation to risk assessment, three chapters deal with the development of fragility curves for dikes and dams in relation to various failure mechanisms.

Technology: general issues --- History of engineering & technology --- hydraulic structure --- sky-jump --- spillway --- flip bucket --- chute --- basin --- erosion --- flow rate --- jet flow --- wave overtopping --- levee --- cover --- probabilistic framework --- slope stability --- piping --- overtopping --- fragility curves --- Monte Carlo simulation --- dam --- stilling basin --- bucket --- flood --- weir --- safety --- protection --- dam protection --- wedge-shaped block --- WSB --- dam spillway --- dam safety --- ACUÑA --- rockfill dams --- throughflow --- numerical modeling --- non-Darcy flow --- porous media --- Forchheimer equation --- high velocity --- crushed rock --- rounded materials --- hydraulic mean radius --- intrinsic permeability --- shape of particles --- angularity of particles --- surface roughness of particles --- river levees --- geogrid reinforcement --- First Order Reliability Method (FORM) --- Surface Response Method (SRM) --- high gravity dams --- dam-foundation-reservoir dynamic interaction --- earthquake input mechanisms --- hydrodynamic pressure --- foundation size --- reservoir length --- stacking --- blending --- combination --- meta-learner --- experts --- machine learning --- Cross Validation --- radial displacement --- rockfill dam --- dam failure --- overflow --- floods --- dam breach --- n/a --- ACUÑA