Beach 3 : The area of unconsolidated or other readily erodible material between the highest level reached by wave action and the place where tidal or lake waters reach a depth of 10 metres below Australian Height Datum
State of NSW and and Office of Environment and Heritage, Guide to the Statutory Requirements for Emergency Coastal Protection Works, Glossary, ISBN 978-1-74293-049-7, Sydney, NSW, Australia 2013. http://www.environment.nsw.gov.au/resources/coasts /130638guidestatreqs.pdf, (CoaStormEmr - Amer) {885}