Wyong Shire Council v Shirt (1980) 146 CLR 40; 29 ALR 217 at 221

This case considered the issue of negligence and whether or not a council was negligent by erecting a sign in a local lake indicating deep water when in fact the water was shallow.  The court examined the standard of care and whether or not the council acted reasonably in relation to the risk of injury to waterskiiers in the circumstances.