Answer: The overflow dam is a dam that allows surplus water over its crest to flow downstream.
In overflow dams, the water flow over the top. It is designed to store water and then allow the surplus water to flow downstream into the riverbed. The overflow dam is a type of Hydraulic Dam. It is constructed of plain concrete or masonry. It is composed of fuse plugs and floodgates to control the flow of water. Overflow dam releases the water in a controlled manner such that it does not damage parts of the structure.
Summary:
What is an Overflow Dam?
The overflow dam is a dam in which the excess water flows downstream into the riverbeds in a controlled manner. Examples of Overflow dams are Weirs and Spillways.
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