50th Anniversary of the Raising of Mundaring WeirPrint Page Print this page


Photographs supplied by Chris Abbott
The plaque commemorates the 50th anniversary of the raising of Mundaring Weir and the augmentation of the Goldfields and Agricultural Areas Water Supply Scheme between 1946 and 1951.
Mundaring Weir, the storage reservoir for the goldfields water supply, is a concrete gravity dam. When completed in 1902 it was claimed to be the highest overflow dam in the world.   The height of the dam wall was increased by 9.75 metres shortly after the end of World War Two.
New concrete was placed alongside the old wall on the downstream face with slots to keep the new section free from the old. If the new concrete had been placed directly against the original wall a crack would have developed as the concrete cooled and shrank on setting. The slots were filled after the temperature of the two masses had equalised. An onsite display has photographs of the old and new walls and a description of the raising.


Address:Weir Village Road, Mundaring Weir, O`Connor Lake Lookout, Mundaring, 6073
GPS Coordinates:Lat: -31.955572
Long: 116.165171
Note: GPS Coordinates are approximate.
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Monument Type:Plaque
Monument Theme:Government
Approx. Event Start Date:1946
Approx. Event End Date:1951


Actual Monument Dedication Date:Friday 14th December, 2001
Front Inscription

This plaque was unveiled by 
Minister for Government Enterprises 

    on 14 December 2001 
        to mark the 
     50th Anniversary 
of raising Mundaring Weir (1946 - 1951) 
     augmentation of the 
Goldfields and Agricultural Areas Water Supply Scheme

Prof Peter Lee  President 
Western Australia Division The Institution of Engineers

Hon Peter Jones AM Chairman  Water Corporation

Source: MA
Monument details supplied by Monument Australia - www.monumentaustralia.org.au