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Home>Water resources>Water storages>Lake Glenmaggie
 Location
History
Purpose
Statistics
Recreational facilities - Dam Wall
Recreational facilities - Sandy Point
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| Location | | Lake Glenmaggie is located on the Macalister River in Central Gippsland, Victoria.
Melway reference - Map 82 E8
The Lake Glenmaggie Dam Wall recreational area is open from 8.00am and closed at 8.00pm daily.
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| History | | The first stage of Glenmaggie was built between 1919 and 1926 and held 132,000 ML when full.
After World War 2, extra water was required to enable returning soldiers to settle on land and farm within the district. This was achieved by raising the wall 3.6 metres, by placing 14 radial gates along the top of the original wall. This increased its capacity to 177,640 ML.
In 1987 the dam was strengthened to withstand major floods and earthquakes by drilling through the wall into the bedrock and installing 70 re-stressable steel cables. This effectively tied the wall to the ground to resist overturning.
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| In June 2007, the Macalister catchment experienced record flooding. Inflows into Lake Glenmaggie peaked in excess of 250,000 ML per day and released peaked at 147,000 ML per day. A second flood occurred in November 2007 with inflows into Lake Glenmaggie peaking at 70,000 ML per day and release peaked at 59,000 ML per day.
Repairs totaling around $4 million were completed in the Macalister after the June and November 2007 floods.
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| Purpose | | The lake harvests water for use in our gravity irrigation systems to properties in the Macalister Irrigation District, in the vicinity of the towns of Maffra, Heyfield and Stratford and the City of Sale.
Glenmaggie dam, which creates the lake, is a mass concrete overfall dam with irrigation outlets on both sides of the river serving irrigation channels. The central portion is an overfall spillway.
The Macalister Irrigation District covers approx. 53,000 hectares around the Macalister and Thomson Rivers extending from Lake Glenmaggie to Sale. It comprises two areas: the Maffra-Sale Irrigation Area to the north of the Thomson River and the Central Gippsland Area (including the Nambrok-Denison Soldier Settlement district) to the south.
To distribute the water available from Lake Glenmaggie three main channels have been constructed: the Main Northern (capacity 500 ML/d), the Main Southern (capacity 1,460 ML/d) and the Main Eastern (capacity 600 ML/d). The Main Southern is supplemented by flow from the Cowwarr Channel diverted from the Thomson River at Cowwarr Weir.
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| Statistics |
| RESERVOIR |
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| Capacity |
177,640 ML |
| Dead storage |
4,860 ML |
| Surface area |
1,760 Ha |
| Full supply level |
77.1 m AHD |
| Catchment area |
1,891 km2 |
| EMBANKMENT |
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| Maximum height |
37.2 m |
| Length |
296 m |
| SPILLWAY |
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| Crest length |
99.2 m |
| Discharge capacity * |
300,000 ML per day |
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| * Glenmaggie Dam was upgraded in 2003 to enable it to withstand overtopping.
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| Recreational facilities - Dam Wall |
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| Recreational facilities - Sandy Point |
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| All of our recreational facilities including Lake Glenmaggie have a carry in – out policy, meaning any litter you bring to the recreational reserve must be taken home with you.
Camping, firearms and horses are not permitted. Dogs must be on leads at all times.
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| Boating on Lake Glenmaggie | | Southern Rural Water is the local authority responsible for the implementation of Marine Safety Victoria's vessel operating rules in this area. The Victorian Water Police provide compliance monitoring and enforcement support.
For boating restrictions please click on the appropriate link below:
- water levels above 44% of capacity
- water levels below 44% of capacity
To find out the current water levels please click here
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| More information | | If you require further information on Lake Glenmaggie please contact 1300 139 510 or send us an email.
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