Toorourrong Reservoir is a small reservoir located on the southern slopes of the Great Dividing Range approximately 40 kilometres (25 mi) north of Melbourne, Victoria, Australia. It is operated by Melbourne Water and forms part of the Melbourne water supply system. Water from Toorourrong flows to Yan Yean Reservoir by aqueduct.
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The reservoir is formed by an earthen dam across the eastern branch of the Plenty River below the junction with Jacks Creek. The system was constructed in 1883–1885 as an extension of the Yan Yean water system. Water is diverted from Wallaby and Silver Creeks, on the northern side of the Great Dividing Range — via the open, granite-lined Wallaby Aqueduct — across the Great Dividing Range just east of Mount Disappointment, then into Jacks Creek and into the reservoir. The reservoir acts as a settling basin before the water travels 8 kilometres (5.0 mi) down the Clearwater Channel to Yan Yean.[1][2][3][4] The reservoir catchments are within the Wallaby Creek section of the Kinglake National Park.[5]
| Point | Coordinates (links to map & photo sources) |
Notes |
|---|---|---|
| Silver Creek Weir | Start of the Wallaby Aqueduct | |
| Wallaby Creek Weir | ||
| End of Wallaby Aqueduct | Crossing the Great Dividing Range | |
| The Cascades | Granite cascade taking water from aqueduct to Jacks Creek | |
| Jacks Creek | ||
| Toorourrong Reservoir |
The Yan Yean Reservoir, completed in 1857, was Melbourne's first water supply system. In 1879 low dam levels showed that further water sources were necessary to meet increased demand from a growing population.[6] The Wallaby Creek aqueduct was constructed in 1882–1883 to divert water from Wallaby Creek via Jacks Creek and the Plenty River to Yan Yean.[7] The reservoir was constructed in 1883–1885 and linked to Yan Yean by the Clearwater Channel aqueduct, and the Wallaby Creek aqueduct was extended north to harvest Silver Creek.[8] As water quality in the lower Plenty River had deteriorated, the intake from the river at Yan Yean Reservoir was closed and all water supply was drawn from the closed forest catchments via Toorourrong.[6]
The reservoir and associated works are listed on the Victorian Heritage Register.[3]
Below the dam wall is the 12-hectare (30-acre) Toorourrong Reservoir Park. The park and surrounding forest were burned in the 2009 Victorian bushfires.[9][10] The park is currently closed and is expected to reopen in late 2011.[11]
In 2011, the City of Whittlesea’s Bushfires Memorial Working Group selected Toorourrong Reservoir as a site for a memorial to remember the impact of the Victorian bushfires on the local community.[10]
There is a platypus watching hide overlooking the reservoir. The Australian Platypus Conservatory was based at the reservoir from 1996 to 2007 and at that time the area supported approximately 30 platypus. The effect of the 2009 fires on the platypus is not currently known.[12]