Résumé :
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This Bulletin addresses the following subjects : -- Confidence Level Assessment of Design Flood Estimates -- Strategy for planning spillway arrangements with emphasis of floods exceeding design flood -- Project facilities means to deal with floods in excess of design flood -- Operational procedures and flood warning system -- Cases studies: some experiences on safe passage of extreme flood in China, Canada and Brazil The adequate management of floods is of fundamental importance either for dam safety and for the security these dams should provide. According to statistical overviews (ICOLD, 1995 and 2003), in recent times flood events have been the main natural hazard responsible for human and economic losses and one of the main reasons for dam failures. This is particularly true for small dams with heights 30 meters or less.
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