Back to Glossary of Terms

Definition for

Spillway

A spillway is a component of a dam allowing for a controlled, rapid release of water. Spillways prevent the breaching or over-topping of dams during flood conditions by offering a second option for releasing water from a reservoir in addition to sending water through the normal outlet works.

Not what you're looking for?

Check out other glossary terms or Send us a Message and we're happy to answer your questions!