Maroondah Dam at capacity, October 2011
|Purpose||Potable water supply|
|Construction began||October 1920|
|Dam and spillways|
|Type of dam||Gravity dam|
|Height||41 m (135 ft)|
|Length||291 m (955 ft)|
|Dam volume||132×103 m3 (4.7×106 cu ft)|
|Spillway type||Uncontrolled concrete chute|
|Spillway capacity||465 m3/s (16,400 cu ft/s)|
|Total capacity||22,179 ML (783.2×106 cu ft)|
|Catchment area||10,400 ha (26,000 acres)|
|Surface area||200 ha (490 acres)|
The Maroondah Dam is a rock foundation concrete gravity dam with an uncontrolled concrete chute spillway across the Watts River, located in the Central region of the Australian state of Victoria. The impounded reservoir is called Maroondah Reservoir. The principle purpose of the dam is to supply potable water for Greater Metropolitan Melbourne.
Location and features
Constructed in the 1920s by the Melbourne and Metropolitan Board of Works, it is now operated by Melbourne Water. Like most of Melbourne's water storages, the entire catchment is eucalypt forest completely closed to human activity, as is the reservoir itself. Immediately below the dam wall, the Maroondah Reservoir Park features a large garden landscaped in an "English style", featuring many exotic plants very different from the surrounding native vegetation. A walking track leads across the dam wall, over the spillway, and up to a lookout from which much of the reservoir can be viewed.
Following the Yan Yean and Toorourrong schemes, the Maroondah Dam scheme was the third water supply source for Melbourne. The Maroondah Aqueduct was built in 1886–1881 to supply water to the Preston Reservoir from a diversion weir on the Watts River. The level for the aqueduct was determined by the site of the proposed Maroondah Reservoir. Preparatory work for the dam was undertaken during the period 1915–1919. Construction commenced in October 1920 and was completed in 1927. During this period the capacity of the Maroondah Aqueduct was increased.
In 1989 the spillway was enlarged and stabilised using ground anchors.
|Wikimedia Commons has media related to Maroondah Reservoir.|
- "Register of Large Dams in Australia" (Excel (requires download)). Dams information. The Australian National Committee on Large Dams Incorporated. 2010. Retrieved 4 March 2014.
- "Maroondah Reservoir". Supply water: Water storage reservoirs. Melbourne Water. Retrieved 9 March 2014.
- Ritchie, E. G. (October 1934). "Melbourne's Water Supply Undertaking". Journal of Institution of Engineers Australia 6: 379–382. Archived from the original on 5 April 2011.
- "Maroondah Reservoir Park: Park Notes" (PDF). Parks Victoria. Government of Victoria. August 2004. Retrieved 27 November 2011.