Mount Dorothy Reservoir | NSW Environment, Energy and Science

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Mount Dorothy Reservoir

Item details

Name of item: Mount Dorothy Reservoir
Other name/s: WS 0073
Type of item: Built
Group/Collection: Utilities - Water
Category: Water Supply Reservoir/ Dam
Location: Lat: -33.7977584618 Long: 150.9699671540
Primary address: Caloola Road, Wentworthville, NSW 2145
Local govt. area: City of Parramatta
Local Aboriginal Land Council: Deerubbin
Property description
Lot/Volume CodeLot/Volume NumberSection NumberPlan/Folio CodePlan/Folio Number
LOT54 DP8850
LOT55 DP8850
LOT56 DP8850
All addresses
Street AddressSuburb/townLGAParishCountyType
Caloola RoadWentworthvilleCity of Parramatta  Primary Address
Dorothy StreetWentworthvilleCity of Parramatta  Alternate Address


Organisation NameOwner CategoryDate Ownership Updated
Sydney WaterState Government27 Nov 98

Statement of significance:

Mount Dorothy Reservoir (WS 73) is an unusual type of reservoir, being built of prestressed concrete. It was the first of its kind built in the Water Board's area of service. It incorporated prestressed concrete blocks for use in the walls of the reservoir and steel wire strapping to counteract the stresses of the water in the reservoir once it was filled. This technology is now widespread, although not extensively used in reservoir construction.
Date significance updated: 13 Dec 06
Note: The State Heritage Inventory provides information about heritage items listed by local and State government agencies. The State Heritage Inventory is continually being updated by local and State agencies as new information becomes available. Read the OEH copyright and disclaimer.


Designer/Maker: MWS & DB
Builder/Maker: MWS & DB
Construction years: 1959-1961
Physical description: Mount Dorothy Reservoir (WS 73) is a cylindrical prestressed concrete reservoir, built using pre cast panels wrapped around with high tensile steel wire. It has a diameter of 39m and is 7.5m deep. The reservoir has a capacity of 9.3 ML. It is similar in construction to Cecil Park Reservoir (WS 165). Standard features include: concrete apron, davit, trigonometric station, access ladder, handrails and inlet and outlet valve chambers.
Modifications and dates: The reservoir has been roofed to safeguard water quality (1960s-1970s).
Current use: Reservoir
Former use: Reservoir


Historical notes: Mount Dorothy Reservoir (WS 73) is one of only two reservoirs, using this technology, built by the MWS & DB, although a number of similar reservoirs have been taken over by the Board. The reservoir was completed in 1961. The reservoir was built to meet the increasing need for water in the western suburbs of Sydney, particularly at Wentworthville and Westmead. The reservoir was the first in the Boards area to employ the prestressed concrete technology. The reservoir was also wrapped in a stressed steel wire providing compressive and tensile strength to the walls of the reservoir.

Historic themes

Australian theme (abbrev)New South Wales themeLocal theme
3. Economy-Developing local, regional and national economies Technology-Activities and processes associated with the knowledge or use of mechanical arts and applied sciences (none)-
4. Settlement-Building settlements, towns and cities Utilities-Activities associated with the provision of services, especially on a communal basis (none)-

Assessment of significance

SHR Criteria a)
[Historical significance]
Mount Dorothy Reservoir was the first reservoir in the Boards area of operations to be built using prestressed concrete. It was constructed to meet the increasing demand for water within the western suburbs of Sydney in the early 1960's.
SHR Criteria d)
[Social significance]
The reservoir provided drinking water to the residents of the western suburbs and as such may be held in some regard by the local community.
SHR Criteria f)
This reservoir is one of two reservoirs of its kind in the Boards area of operation
Integrity/Intactness: Substantially intact
Assessment criteria: Items are assessed against the PDF State Heritage Register (SHR) Criteria to determine the level of significance. Refer to the Listings below for the level of statutory protection.

Procedures /Exemptions

Section of actDescriptionTitleCommentsAction date
57(2)Exemption to allow workStandard Exemptions SCHEDULE OF STANDARD EXEMPTIONS
Notice of Order Under Section 57 (2) of the Heritage Act 1977

I, the Minister for Planning, pursuant to subsection 57(2) of the Heritage Act 1977, on the recommendation of the Heritage Council of New South Wales, do by this Order:

1. revoke the Schedule of Exemptions to subsection 57(1) of the Heritage Act made under subsection 57(2) and published in the Government Gazette on 22 February 2008; and

2. grant standard exemptions from subsection 57(1) of the Heritage Act 1977, described in the Schedule attached.

Minister for Planning
Sydney, 11 July 2008

To view the schedule click on the Standard Exemptions for Works Requiring Heritage Council Approval link below.
Sep 5 2008

PDF Standard exemptions for works requiring Heritage Council approval


Heritage ListingListing TitleListing NumberGazette DateGazette NumberGazette Page
Heritage Act - State Heritage Register 0132918 Nov 99   
Heritage Act - s.170 NSW State agency heritage register 121695   
National Trust of Australia register      

Study details

TitleYearNumberAuthorInspected byGuidelines used
Sydney Water Heritage Study1996121695Graham Brooks and Associates Pty LtdGRAHAM BROOKS AND ASSOCIATES PTY LTD 1 July 1996 Yes

References, internet links & images


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Data source

The information for this entry comes from the following source:
Name: Heritage NSW
Database number: 5051430
File number: EF14/5129

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