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bedding edges, to the east of the dam wall, including a long line of Roman
Cypress (Cupressus sempervirens) along the spillway alignment; and in a park-like picnic area along a terrace above the dam. Features of the latter area include pleasant plantings of mixed deciduous and evergreen exotic trees and Australian trees enclosing a long raised shelf, which is the remnant railway platform from the temporary construction railway, with a series of small timber picnic shelters with a somewhat log cabin-style character. Nearby a considerable line of dry-packed sandstone walling has been used and drystone walling is used generally to control access. The main entry road includes the remains of an old Cypress avenue and an ornamental gum avenue.
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the early twentieth century. The public picnic grounds include a former construction railway platform now housing picnic shelters, and the site of the original construction village remains undeveloped and is now an overgrown archaeological site. The Nepean Dam picnic areas and gardens contain a cultural landscape resource - including remnants of its interwar period plantings, layout and detailing, and extensive areas of bushland - of regional value. The finely detailed dam structures of large-scaled concrete in Art Deco-style sit within a broader landscape setting of outstanding scenic quality.
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1935, there was little rainfall on its catchment during the ensuing three years; however, by
October 1938 the dam was overflowing. At this time it was realised that scouring at the toe of the foundations of the dam required an alteration to the direction of the flow of floodwaters discharged over the spillway weir. This was done by constructing a concrete channel approximately 2,000 feet (610 m) long, 120 feet (37 m) wide, widening to 432 feet (132 m) at the discharge weir. Construction of the channel commenced in July 1943, and was completed in November 1947.
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cottages to house salaried staff, the construction of terraced platforms for plant and machinery, mechanisation of concrete production, the construction of a purpose-built road of access and tramway to transport men, supplies and materials from the nearest railhead to the construction site, the building of permanent infrastructure such as water supply for plant and men and horses, and the use of electricity to power plant and equipment.
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of cyclopean masonry bedded in sandstone concrete, use of blue metal concrete in the wall facings, use of a spillway set away from the gravity wall, valve and crest houses attractively designed and finished to a high standard, the use of an array of upstream intakes to regulate the quality of water supply, the internal inspection gallery, the foundation drainage system, the contraction joints, and the internal drainage system.
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560:. Transport to the dam site was again by light railway, on this occasion of standard gauge. This avoided transhipment from the Government vehicles bringing materials from large commercial quarries, effectively making the line an extended privately owned siding. The line was 4 km (2.5 mi) long through gentle countryside. Trains were worked by a variety of locomotives, including a former
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facing concrete sections are merged progressively into the central sandstone masonry concrete. All the latest improvements in dam design and construction of the day were embodied in the work, building upon the experience gained from the construction of the previous three Upper Nepean Scheme dams. Inspection galleries are provided, with pressure and drainage pipes from the
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to that district. If necessary, it can also receive additional water from the
Shoalhaven Scheme. Water is supplied to the Picton and Bargo districts from Nepean Dam, with this water treated and filtered in the Nepean Water Filtration Plant, a treatment facility added to the dam to improve the water quality to this district, which is now supplied directly from Nepean Dam.
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date, excavation for the foundations of the wall was complete and placing of concrete about to begin. Most of the plant and equipment used for the construction of Avon Dam was dismantled and re-erected at the Nepean Dam site, including the cableways and timber towers. A suspension bridge was constructed across the Nepean River which was later used at
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suspension footbridge and aerial stone ropeway to provide access and material over the gorge were particularly sophisticated for the time and foretells later developments at
Warragamba Dam. The reservoir of the Nepean Dam is the second largest source of water in the whole of the network administered by SCA for the supply of metropolitan Sydney.
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in its day. It continues to play an important role as a major source of water supply for the Sydney region. Additionally, the Nepean Dam is a handsome, well proportioned structure with strong
Stripped Classical style architectural character which complements the monumental nature of the structure and its attractive natural surroundings.
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represent a substantial repository of water supply delivery technology of the era. The use of an electronic lift in the wall (albeit now decommissioned) is a first for NSW. The completion of the dam necessitated the construction of a standard gauge (1835mm) railway line from Bargo which is unique in context of dam construction in NSW.
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The hillside near the upper picnic area was the site of the original construction township and retains an intact road formation, kerbing and guttering and tennis courts from that era. The integrity is such that collectively these features may potentially provide further insight into the lifestyles of
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The design and construction of Nepean Dam was initially undertaken by the Water Supply and
Sewerage Branch of the NSW Public Works Department, and later developed by the Construction Branch of the Water Board. The construction of the dam drew upon the knowledge and experience of a number of engineers
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The completion of the Nepean Dam was a significant step in the continuing process of providing a reliable water supply for Sydney and surrounding areas as part of the Upper Nepean Scheme. Even by the international standards of the time, Nepean was a large dam and was a significant work of engineering
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Construction of the dam was undertaken by the Public Works
Department until 1 September 1928, at which time the department was re-organised and the majority of the staff associated with water supply were transferred to the Board of Water Supply and Sewerage, who continued the work on the dam. At that
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Nepean Dam is representative of a type of dam (cyclopean masonry gravity dam) constructed in NSW by the Water Supply and
Sewerage Branch of the Public Works Department during the first half of the twentieth century. Key representative e attributes of the dam's design and construction include the use
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The wall of the Nepean Dam is the highest of all the dams constructed in the Upper Nepean
Catchment Area. Nepean Dam is one of three dams in NSW which incorporate extensive Inter War Stripped Classical architectural detailing. The crest and valve houses and inlet works retain original ironwork which
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Nepean Dam includes a range of ancillary structures which form components of the overall site, including residential cottages of various ages for operational staff and are representative of their age and type. The former
Resident Engineer's cottage is an attractive example of a vernacular cottage of
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miles (7.2 km) long, discharging into the Cataract Tunnel, 2 miles (3.2 km) long, emerging into the Upper Canal, by which it is conveyed to Prospect Reservoir. The Nepean Dam is now also cross-connected to the Avon Dam, which supplies the Wollongong area, to provide additional water supply
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quarried at the site, embedded in and surrounded by sandstone concrete. To ensure water-tightness, all construction joints are grouted. The upstream face consists of blue metal concrete 5 feet (1.5 m) thick while the downstream face is of similar material 3 feet (0.91 m) thick. Both of the
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A township for workers was constructed of timber obtained from the clearing of the catchment for the Avon Dam. This township provided four and five-roomed cottages for the married men and had metalled roads with concrete kerbing. A typical working man's accommodation consisted of a simple timber hut
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built in 1941, the impounded water of Nepean Dam provided one of the major sources of water for domestic and industrial consumption in metropolitan Sydney, the largest city in NSW. In providing water for metropolitan Sydney during this era the dam, in ensuring security of supply, contributed to the
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Nepean Dam was the fourth of the four water supply dams built as part of the development of the Upper Nepean Water Supply Scheme, one of the most important engineering works and items of public infrastructure in Australia, and had the highest wall of all the NSW water supply dams at the time of its
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and weatherboard utilitarian buildings which were formerly the central maintenance facility for the Upper Nepean Catchment area. They remain in use at a low scale by the Sydney Catchment Authority and include a weatherboard residential cottage similar to the second of the weatherboard residences at
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Work on the dam continued until March 1930, when the depression compelled the Board first to curtail and then suspend work completely. The work recommenced on 12 June 1933 and continued without interruption until completion of the dam in 1935. Although the dam was ready to store water by September,
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The remnant platforms and terraces of the construction area are the largest in scale and most intact in regard to finishes and planning of all four of the Metropolitan Dams. The means of delivering stores and raw material through the network of railway lines and raised platforms, and the system of
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The dam is set within the valley of the Nepean 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 the steeper inclines that graduate into the
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The Nepean Reservoir has a small storage capacity in relation to its large catchment area. While its capacity is much the same as that of Cataract and Cordeaux Reservoirs, its catchment basin is two and a half times as extensive as Cataract and three and a half times as extensive as Cordeaux. The
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The construction technologies used at Nepean Dam are representative of dams constructed in NSW through the first half of the twentieth century. Key representative attributes include the use of cableways, the building of temporary camps to house labourers and tradesman, building of semi-permanent
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Nepean Dam was the fifth of the major water supply/irrigation dams constructed in NSW during the first half of the twentieth century. Whilst the dam was designed by the Public Works Department of NSW, the technologies used in the dam are representative of methods developed by that authority, the
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The cyclopean masonry of the dam is an excellent late example of this type of gravity dam construction in the Inter War era incorporating inspection galleries, contraction joints, and ground surface drainage system which demonstrate the principal characteristics of this technology at this time.
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In the 1980s, work was undertaken on Nepean Dam to alleviate uplift pressure on, and leakage through, the foundations of the dam wall, in accordance with modern design criteria. The downstream face of the wall was supported with an embankment of quarried sandstone blocks and sandstone fill, the
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The rehabilitation of tracts of land scarred in the construction process employed at Nepean Dam through beautification works is representative of practices undertaken at other dams throughout NSW. Key representative attributes of this practice include utilising the former terraced construction
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The public area has been maintained by the Water Board and its successors, with picnic grounds, landscaped gardens and a children's playground. Remnants of the interwar period landscape at the Nepean Dam site are mainly concentrated in two areas - around a small park, with cement faux rockwork
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After construction was complete and the dam had filled, the spillway weir was altered by the construction on the western side of the stream of a concrete channel approximately 2,000 feet (610 m) long and 120 feet (37 m) wide, widening to 432 feet (132 m) at the discharge weir.
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Nepean Dam is located within the Upper Nepean Catchment Area which was developed with the completion of the Cataract and Nepean Tunnels in 1888, as the fourth source of water supply for Sydney. The potential of the Upper Nepean Catchment Area to supply water was fully developed through the
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The design and finishes of the crest house and lower valve house in the Inter War Stripped Classical style were prepared by the engineers of the Water Board. The architectural detailing evokes a sense of monumentalism that is ideally suited to the context of the dam.
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The extent of foresight in planning the execution and design of the construction township is likely to be a first ion NSW in regard to dam construction, setting a practice which was further developed at Woronora Dam, and came to be exemplified at Warragamba Dam.
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The former resident officer's cottage erected at the time of the dam's construction to house the resident engineer is an excellent and intact example of the high standard of accommodation provided for resident Public Works Department Senior staff.
813:(NSW) as being a place which is part of the cultural environment of Australia, which has aesthetic, historical, architectural, archaeological, scientific and social significance for future generations, as well as for the present community of NSW.
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Terraces and platforms adjoining the dam abutments demarcate the location of plant and equipment used in the construction of the dam, in particular the location of the cableway headtowers, the railway terraces and concrete mixing plant platform.
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extensive residential, commercial and industrial development of Sydney during the 1930s and 1950s. Nepean Dam was constructed over a period of ten years between 1926 and 1936, a protracted construction period which is directly related to the
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The practice of ongoing maintenance of the Nepean Dam wall after completion through the surveillance of resident staff and workshop facilities is representative of procedures undertaken at other dams and weirs constructed in NSW.
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The dam and grounds are recognised by the Heritage Council of NSW as a place which is of significance to NSW in relation to its historical, scientific, cultural, social, archeological, natural and aesthetic values.
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cottages, one of which, utilised by the Filtration Plant staff, is the original Resident Engineer's Cottage. Just north of the entrance to the Dam picnic area are the former Catchment workshops, a series of small
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The Nepean Dam continues to supply Sydney with water. It is discharged as required into the river bed below the dam and flows to Pheasant's Nest where it is diverted by a weir to the Nepean Tunnel,
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gorge created by the river's flow over time. Collectively this topography at time of high water level imparts a picturesque scene when viewed from select vantage points above and on the dam wall.
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The upgrading works to the spillway and dam wall in the 1980s, with the rock embankment to make the dam meet modern safety requirements are representative of modern-day safe operating practice.
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construction of four major dams between 1903 and 1936. Nepean Dam is the last of these dams to have been completed. The Upper Nepean Catchment Area continues to supply the regions of Sydney and
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By 1902, however, the water supply was found to be inadequate and a Royal Commission was held which recommended impounding the waters of the Cataract River by means of a major storage dam. The
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The wall of Nepean Dam is an engineering work imbued with a sense of high aesthetic value expressed through the short curved high wall set with the steeply sided valley of the Nepean River.
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the Dam. The area of the former construction village for the Dam remains undeveloped and heavily overgrown, with remnant road borders and evidence of buildings visible on the ground.
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Shortly after construction of the dam was transferred from the Public Works Department to the Water Board, it was decided upon the recommendation of the Chief Engineer of the Board,
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with a galvanised roof. Later, a barracks was constructed for single men. A Public School and recreation halls were also provided, as were full-time medical staff and facilities.
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The provision of public amenity at the dam site is representative of the use of large water supply and irrigation dams in NSW as places for recreation by the greater community.
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scheme was insufficient to meet Sydney's water supply needs. The Nepean project consisted of the construction of a weir across the Nepean River to divert of the rivers
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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.
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in 1927, on the Cordeaux and Avon Rivers respectively. As Cordeaux and Avon Dams were approaching completion, a fourth dam, Nepean Dam, was commenced in 1925.
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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.
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The Nepean Dam includes within its area three brick residential staff cottages, two apparently dating from the 1960s and one from the 1980s, and two older
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construction. It was designed by the NSW Public Works Department under the direction of one of Australia's leading water supply engineers, E.M. de Burgh.
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The place has strong or special association with a particular community or cultural group in New South Wales for social, cultural or spiritual reasons.
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platforms as picnic areas and lookouts, and utilising the former construction roads and tramway for vehicular access to the dam site and dam wall.
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The place is important in demonstrating the principal characteristics of a class of cultural or natural places/environments in New South Wales.
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The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.
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employed in the branches including E.M. de Burgh (Chief Engineer), and Gerald Haskins (the first engineer-in-chief of the former Water Board).
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to draw up recommendations for the amplification of the Sydney water supply. It was upon the recommendations of this body, as approved by the
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The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales.
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Statement of heritage impact: Cataract, Cordeaux & Nepean Dams: Environmental Flow Releases for the Upper Hawkesbury-Nepean River
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Nepean Reservoir therefore fills more rapidly and, under normal conditions, is drawn upon more freely than the other reservoirs.
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latter being compacted by grid and vibratory rollers. It was similar to the work undertaken at the same time for Avon Dam.
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published by the State of New South Wales (Department of Planning and Environment) 2018 under
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planning and scale of the construction techniques are more representative of the Water Board.
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Text is licensed by State of New South Wales (Department of Planning and Environment) under
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Longworth, Jim (May 1994). "Construction Railways of the Upper Nepean Dams - Nepean Dam".
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The Nepean Dam is a large cyclopean masonry dam. This consists of large blocks of
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was completed in 1907. In November 1918, a Board of Experts was appointed by the
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The Upper Nepean Scheme was commenced in 1880 after it was realised that the
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The Sweat of their Brows - 100 yrs of the Sydney Water Board 1888 - 1988
514:, that not only Cordeaux, but also Avon and Nepean Dams were built. The
1174:'Controversial South32 mine wins nod - Mining: concerns for groundwater
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Average annual yield: 23,515 million gallons (106,993 million litres).
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Amount of concrete in the wall: 300,218 cu yards (229,600 cu metres).
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Metropolitan Dams Conservation Management Plan Vol.5, Nepean Dam NSW
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Total capacity: 17,898 million gallons (81,400 million litres).
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on 18 November 1999 having satisfied the following criteria.
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Full supply level above sea level: 1,051 feet (320 m).
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Pass and about 4 miles (6.4 km) by road southeast of
529:, about 7 miles (11.3 km) above the point where the
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Average annual evaporation: 38.5 inches (980 mm).
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in Wingecarribee Shire. The Nepean Dam is one of four
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Average annual rainfall: 42.3 inches (1,070 mm).
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Crest level above sea level: 1,066 feet (325 m).
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This Knowledge (XXG) article contains material from
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Nepean Dam Storage Access Heritage Impact Statement
572:) gauge lines in use at the dam construction site.
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Motor. Additionally, there was a system of narrow (
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1319:"Celebrating 125 years of the Upper Nepean Scheme"
1109:The Water Supply, Sewerage and Drainage of Sydney
1199:Nick Jackson, Matthew Taylor, Jon Breen (2002).
763:In conjunction with other Metropolitan Dams and
656:Length of spillway weir: 436 feet (133 m).
1491:Guildford West pipehead and water supply canal
1089:Australian Railway Historical Society Bulletin
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922:List of reservoirs and dams in New South Wales
668:Greatest depth of water: 225 feet (69 m).
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1231:Graham Brooks and Associates Pty Ltd (1996).
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455:. Completed in 1935 under the supervision of
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1213:: CS1 maint: multiple names: authors list (
1125:Australian Museum Business Services (2008).
306:319 square kilometres (123 sq mi)
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809:The dam and grounds are recognised by the
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1703:Double Bay Compressed Air Ejector Station
674:Area of catchment: 123 sq miles (319km2).
61:Location of Nepean Dam in New South Wales
1052:Department of Planning & Environment
834:the employees that constructed the dam.
552:Railway sidings were established on the
2261:New South Wales State Heritage Register
1274:New South Wales State Heritage Register
1154:b cubed sustainability Pty Ltd (2005).
1047:New South Wales State Heritage Register
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741:New South Wales State Heritage Register
671:Area of lake: 881 acres (357 hectares).
465:New South Wales State Heritage Register
439:, Australia, and provides water to the
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459:, the dam is currently managed by the
1118:"Nepean Dam - Wall & Valve House"
659:Width at crest: 20 feet (6.1 m).
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2246:Southern Highlands (New South Wales)
2110:NSW Department of Primary Industries
1249:Macarthur Development Board (1992).
662:Width at base: 225 feet (69 m).
1181:Heritage Concepts Pty Ltd (2005).
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637:Years of construction: 1926–1935.
325:New South Wales Heritage Register
2281:1935 establishments in Australia
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106:34.3353731497°S 150.6169604400°E
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1631:Sydenham Pit and Drainage (#1)
1251:Macarthur Region Heritage Study
640:Cost: £2,062,000 ($ 4,124,000).
1240:ARC Planning Services (1986).
630:Specifications of Nepean Dam:
518:was completed in 1926 and the
111:-34.3353731497; 150.6169604400
1:
2079:Riverina Water County Council
1481:Potts Hill Reservoirs 1 and 2
739:Nepean Dam was listed on the
556:at a point between Bargo and
18:Dam in Bargo, New South Wales
2256:Concrete-face rock-fill dams
2190:Lower Prospect Canal Reserve
2105:Energy & Water Ombudsman
1283:, accessed on 2 June 2018.
1272:, entry number 01368 in the
1116:Attraction Homepage (2007).
237:Elevation at crest
1233:Sydney Water Heritage Study
811:National Trust of Australia
525:The site chosen was on the
240:325 metres (1,066 ft)
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2200:Mosman Bay Sewage Aqueduct
2133:Sydney Catchment Authority
1713:Western Outfall Main Sewer
1536:other water infrastructure
1324:. WaterNSW. Archived from
1298:Sydney Catchment Authority
649:Length of crest including
554:Main Southern railway line
461:Sydney Catchment Authority
352:a., b., c., d., e., f., g.
314:356.5 hectares (881 acres)
187:Sydney Catchment Authority
2046:Sydney Desalination Plant
1698:Bondi Ocean Outfall Sewer
1415:Centennial Park Reservoir
1183:Archaeological Assessment
533:joins the main stream at
457:Ernest Macartney de Burgh
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259:68.6 metres (225 ft)
175:Ernest Macartney de Burgh
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2126:1998 Sydney water crisis
1242:Macarthur Heritage Study
653:: 710 feet (220 m).
431:in the catchment of the
292: imp gal; 2.15
232:216 metres (709 ft)
221:Height (foundation)
35:The curved arch dam wall
2236:Dams in New South Wales
2074:Murrumbidgee Irrigation
1476:Prospect Hill Reservoir
369:Utilities – Water group
251:6.1 metres (20 ft)
224:82 metres (269 ft)
143:Construction began
2271:Bargo, New South Wales
2241:Dams completed in 1935
1940:Snowy Mountains Scheme
1425:Crown Street Reservoir
1172:Hannam, Peter (2016).
912:New South Wales portal
282:81,400 ML (17,900
159:Construction cost
1708:Middle Harbour Syphon
539:Bargo railway station
510:Committee of the NSW
463:and is listed on the
395:is a heritage-listed
200:Type of dam
2205:Paddington Reservoir
1691:Other infrastructure
1498:Wahroonga Reservoirs
1430:Penshurst Reservoirs
1420:Chatswood Reservoirs
1222:Tourism NSW (2007).
1163:Beasley, M. (1988).
1107:Aird, W. V. (1961).
296:10 US gal)
2286:Wingecarribee Shire
2276:Upper Nepean Scheme
2057:government agencies
2039:Other water sources
1850:Happy Jacks Pondage
1517:Woollahra Reservoir
1512:Waverley Reservoirs
1445:Upper Nepean Scheme
1435:Petersham Reservoir
1410:Bankstown Reservoir
1190:Simpson, M (1985).
491:and Nepean, to the
451:, and metropolitan
433:Upper Nepean Scheme
405:Wingecarribee Shire
302:Catchment area
279:Total capacity
102: /
2145:Boothtown Aqueduct
1486:Upper Canal System
1471:Prospect Reservoir
1405:Ashfield Reservoir
1304:on 13 October 2009
1145:has generic name (
937:Upper Canal System
493:Prospect Reservoir
374:Reference no.
248:Width (crest)
2223:
2222:
2140:Balmain Reservoir
1935:Shoalhaven Scheme
1726:Regional dams and
1721:
1720:
1440:Pymble Reservoirs
932:Shoalhaven Scheme
562:Sydney Steam Tram
449:Wollondilly Shire
413:Wollondilly Shire
389:
388:
311:Surface area
256:Width (base)
194:Dam and spillways
151:Opening date
2293:
2064:Essential Energy
1594:Pumping stations
1560:Johnston's Creek
1545:
1507:Lake Burragorang
1368:
1361:
1354:
1345:
1340:
1338:
1336:
1331:on 31 March 2016
1330:
1323:
1313:
1311:
1309:
1300:. Archived from
1267:
1254:
1245:
1236:
1227:
1218:
1212:
1204:
1195:
1186:
1177:
1168:
1159:
1150:
1144:
1140:
1138:
1130:
1121:
1112:
1094:
1093:
1083:
1077:
1068:
1063:
1061:
1059:
1038:
914:
909:
908:
907:
900:
895:
894:
770:Great Depression
723:Heritage listing
700:
699:
695:
692:
571:
567:
361:18 November 1999
295:
288:
287:
273:Nepean Reservoir
189:
177:
117:
116:
114:
113:
112:
107:
103:
100:
99:
98:
95:
56:
55:
49:
33:
21:
2301:
2300:
2296:
2295:
2294:
2292:
2291:
2290:
2226:
2225:
2224:
2219:
2210:Lake Parramatta
2165:Cooks River Dam
2114:
2093:
2056:
2050:
2034:
1727:
1717:
1686:
1640:
1621:Rushcutters Bay
1589:
1537:
1535:
1526:
1394:
1382:
1379:New South Wales
1372:
1334:
1332:
1328:
1321:
1317:
1307:
1305:
1292:
1289:
1287:Further reading
1261:
1248:
1239:
1230:
1221:
1205:
1198:
1192:Nepean Dam Wall
1189:
1180:
1171:
1162:
1153:
1141:
1131:
1124:
1115:
1106:
1103:
1098:
1097:
1085:
1084:
1080:
1057:
1055:
1040:
1039:
950:
945:
918:
917:
910:
905:
903:
896:
889:
884:
725:
712:corrugated iron
697:
693:
690:
688:
608:
569:
565:
473:
437:New South Wales
417:New South Wales
327:
293:
285:
283:
185:
173:
110:
108:
104:
101:
96:
93:
91:
89:
88:
79:New South Wales
73:Avon Dam Road,
65:
64:
63:
62:
59:
58:
57:
36:
19:
12:
11:
5:
2299:
2297:
2289:
2288:
2283:
2278:
2273:
2268:
2263:
2258:
2253:
2248:
2243:
2238:
2228:
2227:
2221:
2220:
2218:
2217:
2212:
2207:
2202:
2197:
2192:
2187:
2185:Liverpool Weir
2182:
2177:
2175:Lachlan Swamps
2172:
2167:
2162:
2160:Lake Canobolas
2157:
2152:
2147:
2142:
2136:
2135:
2129:
2128:
2122:
2120:
2116:
2115:
2113:
2112:
2107:
2101:
2099:
2095:
2094:
2092:
2091:
2086:
2081:
2076:
2071:
2066:
2060:
2058:
2052:
2051:
2049:
2048:
2042:
2040:
2036:
2035:
2033:
2032:
2027:
2022:
2020:Woodford Creek
2017:
2012:
2007:
2002:
1997:
1992:
1987:
1982:
1977:
1972:
1967:
1962:
1957:
1955:Stephens Creek
1952:
1947:
1942:
1937:
1932:
1927:
1922:
1917:
1912:
1907:
1902:
1900:Menindee Lakes
1897:
1892:
1890:Mangrove Creek
1887:
1882:
1877:
1872:
1867:
1862:
1857:
1852:
1847:
1842:
1837:
1832:
1827:
1825:Glennies Creek
1822:
1817:
1812:
1807:
1802:
1797:
1792:
1787:
1782:
1777:
1772:
1767:
1762:
1757:
1752:
1747:
1742:
1737:
1731:
1729:
1723:
1722:
1719:
1718:
1716:
1715:
1710:
1705:
1700:
1694:
1692:
1688:
1687:
1685:
1684:
1679:
1674:
1669:
1664:
1659:
1654:
1648:
1646:
1642:
1641:
1639:
1638:
1633:
1628:
1623:
1618:
1613:
1608:
1603:
1601:Annandale (#3)
1597:
1595:
1591:
1590:
1588:
1587:
1582:
1577:
1572:
1567:
1562:
1557:
1551:
1549:
1542:
1528:
1527:
1525:
1524:
1519:
1514:
1509:
1500:
1495:
1494:
1493:
1488:
1483:
1478:
1473:
1468:
1463:
1458:
1453:
1442:
1437:
1432:
1427:
1422:
1417:
1412:
1407:
1401:
1399:
1384:
1383:
1373:
1371:
1370:
1363:
1356:
1348:
1342:
1341:
1314:
1288:
1285:
1260:
1257:
1256:
1255:
1246:
1237:
1228:
1219:
1196:
1187:
1178:
1169:
1160:
1151:
1122:
1113:
1102:
1099:
1096:
1095:
1078:
947:
946:
944:
941:
940:
939:
934:
929:
924:
916:
915:
901:
886:
885:
883:
880:
724:
721:
685:
684:
681:
678:
675:
672:
669:
666:
663:
660:
657:
654:
647:
644:
641:
638:
635:
607:
604:
581:Gerald Haskins
547:Warragamba Dam
535:Pheasants Nest
531:Cordeaux River
472:
469:
387:
386:
383:
382:
379:
378:
375:
371:
370:
367:
363:
362:
359:
355:
354:
349:
345:
344:
341:
337:
336:
333:
329:
328:
323:
320:
319:
316:
315:
312:
308:
307:
304:
298:
297:
280:
276:
275:
270:
266:
265:
261:
260:
257:
253:
252:
249:
245:
244:
238:
234:
233:
230:
226:
225:
222:
218:
217:
212:
208:
207:
202:
196:
195:
191:
190:
183:
179:
178:
171:
167:
166:
160:
156:
155:
152:
148:
147:
144:
140:
139:
136:
132:
131:
123:
119:
118:
86:
82:
81:
71:
67:
66:
60:
51:
50:
44:
43:
42:
41:
38:
37:
34:
26:
25:
17:
13:
10:
9:
6:
4:
3:
2:
2298:
2287:
2284:
2282:
2279:
2277:
2274:
2272:
2269:
2267:
2264:
2262:
2259:
2257:
2254:
2252:
2249:
2247:
2244:
2242:
2239:
2237:
2234:
2233:
2231:
2216:
2213:
2211:
2208:
2206:
2203:
2201:
2198:
2196:
2193:
2191:
2188:
2186:
2183:
2181:
2180:Liverpool Dam
2178:
2176:
2173:
2171:
2170:Gosling Creek
2168:
2166:
2163:
2161:
2158:
2156:
2153:
2151:
2150:Botany Swamps
2148:
2146:
2143:
2141:
2138:
2137:
2134:
2131:
2130:
2127:
2124:
2123:
2121:
2117:
2111:
2108:
2106:
2103:
2102:
2100:
2096:
2090:
2087:
2085:
2082:
2080:
2077:
2075:
2072:
2070:
2067:
2065:
2062:
2061:
2059:
2055:Companies and
2053:
2047:
2044:
2043:
2041:
2037:
2031:
2028:
2026:
2023:
2021:
2018:
2016:
2015:Wingecarribee
2013:
2011:
2008:
2006:
2003:
2001:
1998:
1996:
1993:
1991:
1988:
1986:
1983:
1981:
1978:
1976:
1973:
1971:
1968:
1966:
1963:
1961:
1958:
1956:
1953:
1951:
1948:
1946:
1943:
1941:
1938:
1936:
1933:
1931:
1928:
1926:
1923:
1921:
1918:
1916:
1913:
1911:
1908:
1906:
1903:
1901:
1898:
1896:
1893:
1891:
1888:
1886:
1883:
1881:
1878:
1876:
1873:
1871:
1868:
1866:
1863:
1861:
1858:
1856:
1853:
1851:
1848:
1846:
1843:
1841:
1840:Greaves Creek
1838:
1836:
1833:
1831:
1828:
1826:
1823:
1821:
1818:
1816:
1813:
1811:
1810:Fitzroy Falls
1808:
1806:
1803:
1801:
1798:
1796:
1793:
1791:
1788:
1786:
1783:
1781:
1778:
1776:
1773:
1771:
1768:
1766:
1765:Cascade Creek
1763:
1761:
1758:
1756:
1753:
1751:
1748:
1746:
1743:
1741:
1738:
1736:
1733:
1732:
1730:
1724:
1714:
1711:
1709:
1706:
1704:
1701:
1699:
1696:
1695:
1693:
1689:
1683:
1680:
1678:
1675:
1673:
1670:
1668:
1665:
1663:
1660:
1658:
1655:
1653:
1650:
1649:
1647:
1643:
1637:
1634:
1632:
1629:
1627:
1624:
1622:
1619:
1617:
1616:Rozelle (#27)
1614:
1612:
1609:
1607:
1606:Camilia (#67)
1604:
1602:
1599:
1598:
1596:
1592:
1586:
1583:
1581:
1578:
1576:
1573:
1571:
1568:
1566:
1563:
1561:
1558:
1556:
1553:
1552:
1550:
1546:
1543:
1541:
1533:
1529:
1523:
1520:
1518:
1515:
1513:
1510:
1508:
1504:
1501:
1499:
1496:
1492:
1489:
1487:
1484:
1482:
1479:
1477:
1474:
1472:
1469:
1467:
1464:
1462:
1459:
1457:
1454:
1452:
1449:
1448:
1446:
1443:
1441:
1438:
1436:
1433:
1431:
1428:
1426:
1423:
1421:
1418:
1416:
1413:
1411:
1408:
1406:
1403:
1402:
1400:
1398:
1393:
1389:
1385:
1380:
1376:
1369:
1364:
1362:
1357:
1355:
1350:
1349:
1346:
1327:
1320:
1315:
1303:
1299:
1295:
1291:
1290:
1286:
1284:
1282:
1279:
1275:
1271:
1266:
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1247:
1243:
1238:
1234:
1229:
1225:
1220:
1216:
1210:
1202:
1197:
1193:
1188:
1184:
1179:
1175:
1170:
1166:
1161:
1157:
1152:
1148:
1143:|author=
1136:
1128:
1123:
1119:
1114:
1110:
1105:
1104:
1100:
1091:
1090:
1082:
1079:
1075:
1072:
1067:
1053:
1049:
1048:
1043:
1037:
1035:
1033:
1031:
1029:
1027:
1025:
1023:
1021:
1019:
1017:
1015:
1013:
1011:
1009:
1007:
1005:
1003:
1001:
999:
997:
995:
993:
991:
989:
987:
985:
983:
981:
979:
977:
975:
973:
971:
969:
967:
965:
963:
961:
959:
957:
955:
953:
949:
942:
938:
935:
933:
930:
928:
925:
923:
920:
919:
913:
902:
899:
893:
888:
881:
879:
876:
872:
868:
864:
861:
857:
856:
852:
848:
844:
840:
839:
835:
831:
827:
823:
822:
818:
814:
812:
807:
806:
802:
798:
794:
790:
787:
786:
782:
778:
777:
773:
771:
766:
761:
757:
755:
749:
748:
744:
742:
737:
733:
729:
722:
720:
716:
713:
708:
703:
682:
679:
676:
673:
670:
667:
664:
661:
658:
655:
652:
648:
645:
642:
639:
636:
633:
632:
631:
628:
624:
620:
618:
613:
605:
603:
599:
597:
593:
588:
584:
582:
577:
573:
563:
559:
555:
550:
548:
542:
540:
536:
532:
528:
523:
521:
517:
513:
509:
505:
501:
496:
494:
490:
486:
482:
478:
477:Botany Swamps
470:
468:
466:
462:
458:
454:
450:
447:regions, the
446:
442:
438:
434:
430:
426:
422:
418:
414:
410:
406:
402:
399:split across
398:
394:
384:
380:
376:
368:
360:
353:
350:
342:
334:
332:Official name
326:
317:
313:
309:
305:
303:
299:
291:
281:
277:
274:
271:
267:
262:
258:
254:
250:
246:
243:
239:
235:
231:
227:
223:
219:
216:
213:
209:
206:
203:
201:
197:
192:
188:
184:
180:
176:
172:
168:
164:
161:
157:
153:
149:
145:
141:
137:
133:
130:
127:
124:
120:
115:
87:
83:
80:
76:
72:
68:
48:
39:
32:
27:
22:
16:
2266:Sydney Water
2155:Busby's Bore
2084:Sydney Water
2069:Hunter Water
2030:Yellow Pinch
1950:Spring Creek
1785:Clarrie Hall
1677:North Sydney
1672:Marrickville
1611:Mascot (#38)
1580:Whites Creek
1505: /
1465:
1447:comprising:
1375:Water supply
1333:. Retrieved
1326:the original
1306:. Retrieved
1302:the original
1297:
1294:"Nepean Dam"
1262:
1250:
1241:
1232:
1224:"Nepean Dam"
1200:
1191:
1182:
1173:
1164:
1155:
1126:
1108:
1101:Bibliography
1087:
1081:
1056:. Retrieved
1045:
1042:"Nepean Dam"
927:Sydney Water
898:Water portal
877:
873:
869:
865:
862:
858:
854:
853:
849:
845:
841:
837:
836:
832:
828:
824:
820:
819:
815:
808:
804:
803:
799:
795:
791:
788:
784:
783:
779:
775:
774:
765:Woronora Dam
762:
758:
750:
746:
745:
738:
734:
730:
726:
717:
707:weatherboard
704:
686:
629:
625:
621:
609:
600:
589:
585:
578:
574:
551:
543:
527:Nepean River
524:
516:Cordeaux Dam
508:Public Works
500:Cataract Dam
497:
474:
392:
390:
289:
272:
215:Nepean River
129:water supply
15:
2215:Tank Stream
2005:Winburndale
1925:Rocky Creek
1860:Island Bend
1835:Grahamstown
1645:Vent stacks
1636:Ultimo (#1)
1585:Wolli Creek
1555:Cooks River
1381:, Australia
1316:WaterNSW -
1259:Attribution
617:foundations
606:Description
566:610 mm
182:Operator(s)
138:Operational
109: /
97:150°37′01″E
85:Coordinates
2230:Categories
2119:Historical
2098:Regulators
2000:Tumut Pond
1980:Tareelaroi
1975:Tantangara
1945:Split Rock
1905:Murray Two
1895:Medlow Dam
1800:Deep Creek
1775:Chichester
1755:Burrinjuck
1750:Burrendong
1728:reservoirs
1570:Mosman Bay
1503:Warragamba
1392:reservoirs
1308:17 October
1270:Nepean Dam
1092:: 137–153.
943:References
596:Sutherland
592:Wollongong
558:Yerrinbool
512:Parliament
504:Government
421:Yerrinbool
415:, both in
393:Nepean Dam
358:Designated
335:Nepean Dam
94:34°20′07″S
24:Nepean Dam
2251:Arch dams
2195:Manly Dam
2010:Windamere
1995:Tumut Two
1990:Toonumbar
1960:Suma Park
1880:Khancoban
1865:Jindabyne
1805:Eucumbene
1740:Blowering
1548:Aqueducts
1278:CC-BY 4.0
1209:cite book
1135:cite book
1071:CC-BY 4.0
754:Illawarra
612:sandstone
570:2 ft
445:Illawarra
441:Macarthur
264:Reservoir
165:2,062,000
2089:WaterNSW
2025:Wyangala
1965:Talbingo
1820:Glenbawn
1790:Cochrane
1735:Bendeela
1682:Stanmore
1667:Lewisham
1575:Old Como
1565:Lewisham
1532:Sewerage
1522:Woronora
1461:Cordeaux
1456:Cataract
1335:27 March
1054:. H01368
882:See also
568: /
520:Avon Dam
485:Cordeaux
481:Cataract
348:Criteria
211:Impounds
205:Arch dam
170:Built by
70:Location
1970:Tallowa
1920:Pindari
1885:Lostock
1870:Jounama
1845:Guthega
1830:Googong
1795:Copeton
1780:Chifley
1770:Chaffey
1760:Carcoar
1662:Croydon
1657:Burwood
1281:licence
1074:licence
696:⁄
471:History
411:in the
403:in the
366:Part of
269:Creates
126:Potable
122:Purpose
1910:Oberon
1875:Keepit
1540:Sydney
1466:Nepean
1397:Sydney
1058:2 June
651:pylons
453:Sydney
229:Length
135:Status
1985:Tooma
1930:Rydal
1915:Pejar
1815:Geehi
1745:Brogo
1652:Bondi
1329:(PDF)
1322:(PDF)
435:, in
429:weirs
409:Bargo
377:01368
343:Built
75:Bargo
1855:Hume
1626:Ryde
1534:and
1451:Avon
1390:and
1388:Dams
1337:2016
1310:2017
1215:link
1147:help
1060:2018
594:and
489:Avon
443:and
427:and
425:dams
407:and
401:Avon
391:The
340:Type
154:1935
146:1926
1538:in
1395:in
1377:in
397:dam
242:AHD
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1296:.
1211:}}
1207:{{
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1137:}}
1133:{{
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951:^
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487:,
483:,
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286:10
163:A£
77:,
1367:e
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1353:v
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1120:.
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698:2
694:1
691:+
689:4
294:×
290:^
284:×
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