The Design and Construction of Levees

Levees along Columbia River in need of dire repair, could cost area billions without fix

Some levees are sinking, why one levee official is not surprised

What is a levee? Watch this levee explainer video, which may answer some of your questions about levees, the risks, and how they work. During a flood, a levee may be threatening to breach or fail creating a risk for communities who live behind the levee. This means that people may be asked to relocate to a safer area. Our friends at NSW SES have given us permission to use this video. *Please note, some vision from interstate has also been used for explanative purposes. For updates go to: sa.gov.