Greenvale Reservoir was built to supply Melbourne’s growing west, and stores water transferred from Silvan Reservoir. Water from Greenvale flows out to service reservoirs in Melbourne’s north-western and western suburbs, typically from Craigieburn to Werribee.
Key facts
The dam at Greenvale Reservoir is a rolled earthfill and rockfill embankment, and was completed in 1971.
- Catchment area: 350 hectares (off-stream storage)
- Surface area: 174 hectares
- Total capacity: 26,839 megalitres
- Dam height: 52 metres
- Dam length: 2,500 metres
Water catchment protection and access
Greenvale Reservoir is an off-stream reservoir, receiving water from on-stream reservoirs and other sources. There is:
- no entry into the protected water supply catchment, with offenders subject to prosecution under the Water Act 1989 (Vic)
- entry permitted to Greenvale Reservoir Park, managed by Parks Victoria.
Melbourne Water continually reviews our protected catchments to determine if more areas can be opened to the public. While this would allow more people to enjoy Victoria’s vast natural spaces, it must be balanced with protecting our precious drinking water for the safety of our community.
Rainfall over the years
View highlights from our historical rainfall data for Greenvale Reservoir, including annual rainfall, monthly averages, and the wettest and driest years by month.
Live rainfall and water storage data
Get the latest information on each of our 10 major reservoirs, including daily water storage levels and hourly rainfall data.
Annual rainfall at Greenvale (1972-2022)
Monthly rainfall records (mm)
Last updated: January 2023
| Month | Wettest | Driest | Average |
|---|---|---|---|
| January | 115.8 (2020) | 1.4 (2009) | 46.5 |
| February | 179.6 (2005) | 0.6 (1991) | 44.1 |
| March | 136.2 (2001) | 6.0 (1998) | 43.2 |
| April | 147.6 (1974) | 9.0 (2008) | 50.3 |
| May | 116.2 (1974) | 8.8 (2005) | 46.8 |
| June | 134.0 (2013) | 10.2 (1974) | 49.1 |
| July | 110.6 (1987) | 12.4 (1994) | 43.3 |
| August | 112.4 (1975) | 20.2 (1977) | 52.0 |
| September | 117.6 (2016) | 14.4 (2007) | 53.7 |
| October | 169.2 (2022) | 6.8 (2007) | 60.6 |
| November | 146.8 (2010) | 14.8 (1982) | 63.9 |
| December | 146.6 (1985) | 3.6 (1972) | 52.8 |
| Annual total | 838.8 (1974) | 368.8 (1997) | 606.4 |
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