Grass revetments on dikes
To protect the Netherlands against flooding, a sound set of design and legal assessment instruments for primary flood defences such as dikes, dams, dunes, and hydraulic structures is necessary. Such knowledge is included in the Fundamentals of Flood Protection, Technical Reports and Software. In recent research projects and from practical experience, it appears that stairs, transitions, trees, and fences are often potential weak spots in flood defences. Examples of this include dike breaches by Hurricane Katrina near New Orleans in 2005 and the high water in Thailand in 2011.