| Nepean Dam | |
|---|---|
 The curved arch dam wall | |
  Location of Nepean Dam in New South Wales | |
| Location | Avon Dam Road, Bargo, New South Wales |
| Coordinates | 34°20′07″S 150°37′01″E / 34.3353731497°S 150.6169604400°E |
| Purpose | Potable water supply |
| Status | Operational |
| Construction began | 1926 |
| Opening date | 1935 |
| Construction cost | A£2,062,000 |
| Built by | Ernest Macartney de Burgh |
| Operator(s) | Sydney Catchment Authority |
| Dam and spillways | |
| Type of dam | Arch dam |
| Impounds | Nepean River |
| Height (foundation) | 82 metres (269 ft) |
| Length | 216 metres (709 ft) |
| Elevation at crest | 325 metres (1,066 ft) AHD |
| Width (crest) | 6.1 metres (20 ft) |
| Width (base) | 68.6 metres (225 ft) |
| Reservoir | |
| Creates | Nepean Reservoir |
| Total capacity | 81,400 ML (17,900×106 imp gal; 2.15×1010 US gal) |
| Catchment area | 319 square kilometres (123 sq mi) |
| Surface area | 356.5 hectares (881 acres) |
| Official name | Nepean Dam |
| Type | Built |
| Criteria | a., b., c., d., e., f., g. |
| Designated | 18 November 1999 |
| Part of | Utilities – Water group |
| Reference no. | 01368 |
The Nepean Dam is a heritage-listed dam split across Avon in the Wingecarribee Shire and Bargo in the Wollondilly Shire, both in New South Wales, Australia. The reservoir created by the dam spreads across Avon, Bargo and also Yerrinbool in Wingecarribee Shire. The Nepean Dam is one of four dams and weirs in the catchment of the Upper Nepean Scheme, in New South Wales, Australia, and provides water to the Macarthur and Illawarra regions, the Wollondilly Shire, and metropolitan Sydney. Completed in 1935 under the supervision of Ernest Macartney de Burgh, the dam is currently managed by the Sydney Catchment Authority and is listed on the New South Wales State Heritage Register.[1]
- ^ "Nepean Dam". New South Wales State Heritage Register. Department of Planning & Environment. H01368. Retrieved 2 June 2018.
Text is licensed by State of New South Wales (Department of Planning and Environment) under CC-BY 4.0 licence.
