Greenvale Reservoir, Reservoir in Greenvale, Victoria, Australia

Greenvale Reservoir is a large water storage facility near Melbourne in Victoria. The structure holds approximately 27,000 megalitres of water behind a 52 meter high dam and covers around 174 hectares.

Greenvale Reservoir opened on 18 April 1973, built to supply drinking water to Melbourne's northern and western suburbs; the earth-and-rockfill embankment has a clay core. A 2009 risk assessment found the dam below current safety standards, and Melbourne Water contracted Thiess in 2014 to upgrade it, work finished in 2017.

Greenvale Reservoir Park, south and west of the dam wall, has picnic tables, a playground and barbecues, and is managed by Parks Victoria. The 37-hectare park closed in 2014 for dam strengthening works and stayed largely shut for over a decade, reopening fully in December 2025.

The Greenvale Reservoir Park lies south and west of the dam wall and is managed by Parks Victoria. It holds picnic tables, a playground and barbecues. Most of the park stayed shut after the 2014 dam-strengthening works and only fully reopened in December 2025, so check current access before visiting.

Water is supplied from other reservoirs rather than directly from a river, an unusual design for storage systems. This method of water supply means that water levels and inflow can be closely controlled to ensure optimal storage and distribution.