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Rocklands Reservoir facts for kids

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Rocklands Dam
Rocklands Reservoir is located in Victoria
Rocklands Reservoir
Location of Rocklands Reservoir in
Country Australia
Location Wimmera, Victoria
Coordinates 37°14′04.34″S 141°57′35.70″E / 37.2345389°S 141.9599167°E / -37.2345389; 141.9599167
Status Operational
Construction began 1938
Opening date 1953
Owner(s) GWM Water
Dam and spillways
Type of dam Gravity dam
Impounds Glenelg River
Length 270 m (890 ft)
Dam volume 69×10^3 m3 (2.4×10^6 cu ft)
Spillways 1
Spillway type Uncontrolled
Spillway capacity 763 m3/s (26,900 cu ft/s)
Creates Rocklands Reservoir
Total capacity 348,300 ML (7.66×1010 imp gal; 9.20×1010 US gal)
Active capacity 261,510 ML (5.752×1010 imp gal; 6.908×1010 US gal)
Catchment area 1,355 km2 (523 sq mi)
Surface area 6,750 km2 (2,610 sq mi)
Maximum water depth 17 m (56 ft)
Normal elevation 195.5 m (641 ft) AHD
Rocklands Reservoir at

The Rocklands Reservoir, a water reservoir, is created by a major ungated concrete–walled gravity dam with embankment sections across the Glenelg River in the Wimmera region of Victoria, Australia. The reservoir is the largest reservoir within Grampians-Wimmera-Mallee Water's (GWMWater) supply system. Originally constructed to supply the Wimmera-Mallee Domestic and Stock channel system, water held by Rocklands Reservoir is now used for many different purposes. A unique feature of Rocklands Reservoir is that all entitlement holders, including the environment, are able to be supplied with water from the reservoir.

Rocklands Dam

Construction of the dam began in 1938. World War II caused construction to cease, and construction was recommenced in 1950, with the dam being completed in 1953. A 270 metres (890 ft) long cement gravity dam forms the main dam wall and is flanked by two embankment sections. At 100% operating capacity the dam wall holds back 261,510 megalitres (9,235×10^6 cu ft) of water. The reservoir is capable of holding up to 348,300 megalitres (12,300×10^6 cu ft) of water. At 100% capacity the surface area of Rocklands Reservoir is 67.5 square kilometres (26.1 sq mi) and the catchment area is 1,355 square kilometres (523 sq mi). The spillway is capable of discharging 763 cubic metres per second (26,900 cu ft/s).


Rocklands Reservoir is a popular recreational boating location; with powered boating, water skiing and jet skiing allowed. Camping is permitted in designated areas. During the duck hunting season, duck shooting is allowed, it is also a popular fishing spot with Murray cod, Redfin, Trout and Carp taken regularly at all times of the year, Rocklands had a reputation as one of the premier carp fishing destinations in the late 1990s and early 2000s with 10 kg+ carp taken regularly.

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