Spillway, Definition, Importance, Types, Design, & Facts

Spillway, passage for surplus water over or around a dam when the reservoir itself is full. Spillways are particularly important safety features for several types of dams, protecting the dam and its foundation from erosion. Learn more about dam spillways with this article.

Spillway, Types of Spillway, Requirements

The Spillway

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Spillway, Types of Spillway, Requirements

Schematic diagram of spillway and overflow

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Spillways

The converging overfall spillway at Vatnsfell during flood