Heritage Places

Heritage Place Details

Map Show Map
Address Grants Gully Road CLARENDON
Accuracy L - low level confidence
Development Plan Onkaparinga Council
Polygon Type B - Building footprint
Details (Known As) Clarendon Weir, Onkaparinga River
Registered Name Clarendon Weir
Significance Built as a diversion weir to supply the off-stream reservoir at Happy Valley (registered place 12710), the Clarendon Weir is part of the third major water supply scheme constructed to service the Adelaide metropolitan area. This scheme was developed in response to the increased consumption of water resulting from the water-borne sewage system established in Adelaide in the early 1880s. The additional water supply from the Onkaparinga River was conveyed to the Happy Valley reservoir via a 5km long tunnel which was reputed, at the time, to be the longest ever driven in Australia. The scheme represents a milestone in the development of engineering capabilities in South Australia in the late 19th century. (HB: 3/2005)
Subject Index Utilities - Weir
Class State
Status Code REG - Confirmed as a State Heritage Place in the SA Heritage Register
Status Date 08-NOV-1984
LGA Onkaparinga
State Heritage ID 12711
Heritage Number 5082
Section 16
As listed in the SA Heritage Register
Plan Parcel & Title Information CT 5885/765 F218799 Q99


While due care has been taken to ensure that the SA Heritage Places Database accurately reflects the South Australian Heritage Register and listings of Local Heritage Places in Development Plans, the State of South Australia does not accept liability for the use of the SA Heritage Database for any purpose. Users should consult the Department for Environment and Water - Heritage South Australia to confirm the listing of State Heritage Places and the relevant Development Plan for Local Heritage Places/Contributory Items.

In the majority of cases, the maps of State Heritage Places on this web site show the footprints of the most significant structures on a registered Place. However, sometimes they simply indicate the complete area of land comprising the Place. Work is proceeding to further refine the mapping of such places. It is also important to note that development control is not limited to the registered structures but extends to their setting and structures nearby (what is termed ‘development affecting’ a State Heritage Place). Hence it is vital that exact details of the listed place and implications for any proposed development be discussed with Heritage South Australia staff, as they cannot be deduced solely from the information on this web site. The inclusion of a place in the SA Heritage Register gives no right of public access. Permission to visit properties must be sought from the owners. The accuracy of the mapping of State Heritage Places is not guaranteed. Please contact Heritage SA ( https://www.environment.sa.gov.au/topics/heritage/sa-heritage-register) if you believe there is an error.

GIS files

To access downloadable GIS files, go to Data.SA.