What is a spillway?

by The Brazos River Authority

A spillway part of a dam that is designed to allow water to flow freely over the dam during floods. Spillways may be used on dams with floodgates as an additional means to control release of water during flooding.  A spillway may also be used as the main area of water release from a dam, allowing water to flow through the spillway only when the reservoir is full. 

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About us

The Brazos River Authority was created by the Texas Legislature in 1929 as the first state agency in the country with the purpose of developing and managing the water resources of an entire river basin. Today, the Authority develops and distributes water supplies, provides water and wastewater treatment, monitors water quality, and pursues water conservation through public education programs. Although the Authority is an agency of the state, it does not levy or collect taxes and is entirely self-supporting.

 

The information provided on this site is intended as background on water within the Brazos River basin. There should be no expectation that this information is all encompassing, complete or in any way examines every aspect of this very complex natural resource. 

 

We invite you to post comments and expect they will be made in good taste. The Authority reserves the right to reject or remove any comment that is not constructive in the education of the general public on issues regarding water in the Brazos basin.