O'Shannassy Reservoir
| O'Shannassy Reservoir | |
|---|---|
| Location | McMahons Creek, Victoria, Australia |
| Construction began | 1922 |
| Opening date | 1928 |
| Dam and spillways | |
| Length | 226 metres |
| Height | 34 metres |
| Reservoir | |
| Creates | O'Shannassy Reservoir |
| Total capacity | 3123 megalitres |
| Catchment area | 11900 hectares |
| Surface area | 27 hectares |
The O'Shannassy Reservoir is located on the O'Shannassy River - a tributary of the Yarra River - near McMahons Creek, around 80 km East of Melbourne, Victoria, Australia. The reservoir is part of Melbourne's water supply system. Water flows under gravity to Silvan Reservoir, then to storage and distribution reservoirs around Melbourne. It is the smallest of the water storage reservoirs managed by Melbourne Water, with a capacity of approximately 3100 ML, but it is on a very productive catchment, with stream flow averaging 80000 ML/annum. [1][2][3][4]
The location was selected as it is at sufficient altitude for gravity supply to the elevated eastern suburbs of Melbourne. A diversion weir on the O'Shannassy River and aqueduct/pipeline to the Surrey Hills Reservoir in Melbourne were completed in 1914. The weir was replaced by the reservoir in 1928. The construction of the Yarra-Silvan conduits in the 1950s resulted in reduced requirements for the aqueduct and it was decommissioned in 1997.[3][4]
References
- ↑ 'shannassy_reservoir.asp Silvan Reservoir, Melbourne Water, retrieved 2010-09-10
- ↑ Balassone, Paul (2006), Pigging of the O'Shannassy Outlet Mains, 69th Annual Victorian Water Industry Engineers and Operators Conference, retrieved 2010-09-08
- ↑ 3.0 3.1 Ritchie, E. G. (October 1934), "Melbourne's Water Supply Undertaking", Journal of Institution of Engineers Australia 6: 379–382, archived from the original on 2011-04-05
- ↑ 4.0 4.1 O'Shannassy Aqueduct Trail, Yarra Ranges National Park, Parks Victoria, September 2006, retrieved 2010-09-15
Coordinates: 37°40′30″S 145°48′20″E / 37.67500°S 145.80556°E
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