Yan Yean Reservoir
| Yan Yean Reservoir | |
|---|---|
The Yan Yean Reservoir with Whittlesea in the foreground | |
| Coordinates | 37°33′S 145°08′E / 37.550°S 145.133°E |
| Type | reservoir |
| Primary inflows | Toorourrong Reservoir via aqueduct (off-stream storage) |
| Primary outflows | Plenty River |
| Basin countries | Australia |
| Water volume | 30 million m3 (30,000 ML) |
Yan Yean Reservoir is the oldest water supply for the city of Melbourne, Victoria, Australia. At the time of its completion in 1857 it was the largest artificial reservoir in the world. It is 30 kilometres (19 mi) north of the city within the eponymous locality of Yan Yean, and is built on the Plenty River, a tributary of the Yarra River. An embankment 9.5 metres (31 ft) high holds back 30,000 ML (1.1 billion cu ft) of water.
The reservoir is managed by Melbourne Water as part of the water supply system for Melbourne.