into the Upper Canal by which it is conveyed to Prospect Reservoir. There are three cottages associated with the Dam, two of brick and one of weatherboard. The brick cottages are both very similar single-storey brick bungalows with terracotta-tiled hipped-gable roofs, dating from the 1960s. The weatherboard cottage appears to date from the construction of the Dam and is reputed to have been the Resident Engineers residence. It is a single-storey, weatherboard clad building on sandstone piers with a hipped and gabled roof clad in corrugated-iron. The building features little decoration but has a front verandah which wraps around the building for half the length of the sides. This has chamfered square timber posts, a slatted timber balustrade and sandstone steps with sandstone masonry balustrades. The Cordeaux Dam site is a popular tourist attraction. The public area is maintained with picnic grounds, landscaped gardens, shelter sheds and pathways. The grounds associated with the main public areas of the dam contain many intact landscape elements from the s (and possibly late 1920s). Remnant landscape features include stone retaining walls; gardens (layout and plantings); a robust and imaginative cement-sculpted grotto/picnic shelter sited between a large Monterey Pine and a very large Eucalypt; a broad stone flagged surface drain in the upper picnic area; a lower picnic area with a series of grassed terraces accessible by a narrow crazy-paved path in stone; and a Monterey Pine (Pinus radiata) avenue to the lower dam road with gums beyond. The upper park area is characterised by mature pines while an interwar cottage and nearby propagating structure include older plantings of Magnolia grandiflora and Lagerstroemia indica which are probably contemporary with the cottage. A distinctive feature of the site is stands of autochthonous Cypress Pine (Callitris sp.). The Conservation Management Plan outlines the key elements and their individual significance assessments. Condition As at 21 January 2009, the condition of the dam was good. The fabric of Cordeaux Dam retains a high level of integrity. Modifications and dates 1960's - Two brick cottages were built, probably as replacements for earlier weatherboard cottages. 1988 - Upgraded with a system of drains in the wall and foundations. Further information Cordeaux Dam is located in three Council areas: Wollondilly, Wingecarribee and Wollongong. Heritage listing As at 21 January 2009, Cordeaux Dam was the second of the four water supply dams built as part of the development of the Upper Nepean