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Last edited 18 May 2021
Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines overtopping is: ‘The passage of water over a component such as a floodbank or seawall, due to wave action. Overtopping does not necessarily represent ‘failure’ of a flood defence to perform its function.’
See also: Overflowing.
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