Reasons for Failure of Earth Dams. Types of failure in Earth dams. Since only superficial inspections of a dam can usually be made, it is imperative that owners and maintenance personnel be aware of the prominent types of failure and their telltale signs. Earth dam failures can be grouped into three general categories. A brief discussion of each type is as follows. Over topping failures result from the erosive action of water. How to Design Small dams.

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