Geotechnical hazards are derived from and linked with broader geological hazards surrounding dam sites and reservoir areas. Geologically, no two sites will be the same; many different geological processes and interactions can create complex sites and the materials available for dam construction. Geology will have a profound influence on the location of the dam site and layout of dam features. Geological hazards are those geological features that have the potential to negatively affect the successful construction of a dam at the chosen site. Geological hazards may affect the selection of dam sites and surrounding reservoir areas. The successful project will identify geological hazards and, where necessary, mitigate the effects that hazards could bring on the construction and operation of dams and reservoirs.
This Technical Note is prepared to provide guidance regarding geological and geotechnical issues and recommended risk mitigation and management measures. The investigation, design, and construction of dams should identify and consider all potential hazards and threats to dam safety while being cognizant of the associated consequences of dam failure.