notable achievement in civil engineering practice. The dam is a regional landmark that has engendered beautification works undertaken from the 1950s for the general visiting public. The picnic areas in particular have strong associations with past management practices of the Water Board. The grounds of the dam are associated with the local and regional community of Sydney as a longstanding place of passive recreation. Woronora Dam was listed on the New South Wales State Heritage Register on 18 November 1999 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. In providing water for southern suburbs of metropolitan Sydney the Woronora Dam, in ensuring security of supply, contributed to the extensive residential and commercial development of Sutherland from the 1930s. Woronora Dam was constructed over a period of ten years between 1927 and 1941, a protracted construction period which is directly related to the Great Depression and a period of government financial stringency. The completion of the Dam during this period was one of the major public works projects undertaken in the State. The place has a strong or special association with a person, or group of persons, of importance of cultural or natural history of New South Wales's history. The design and construction of Woronora Dam was undertaken by the Construction Branch of the Water Board. The construction of the Dam drew upon the knowledge and experience of a number of the engineers including Gerald Haskins (the first engineer-in-chief of the former Water Board), Stanley T. Farnsworth and (Sir) William Hudson (best known for his role in the Snowy Mountains Hydro Electricity Scheme). The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales. The wall of Woronora Dam is an engineering work imbued with a sense of high aesthetic value expressed through the long curved high wall set with the wide valley of the Woronora River. Upstream of the dam wall this setting is characterised by the broad expanse of the pool of water bordered by the crests of the valley sides. Downstream of the dam wall the setting is characterised by forested hillsides. Collectively this topography at times of high water level imparts a picturesque scene when viewed from select vantage points above and on the dam wall. The design and finishes of