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Cressbrook Dam is one of the three water storages used to supply Toowoomba and the surrounding region in Queensland, Australia. The dam is 33 km (21 mi) north-east of Toowoomba in the locality of Biarra in the Somerset Region. It was constructed in 1983[1] for the former Toowoomba City Council (now the Toowoomba Regional Council). The other two storages used for Toowoomba are Perseverance Dam and Cooby Dam.
| Cressbrook Dam | |
|---|---|
 Lake Cressbrook, only 12 percent full, 2008 | |
  Cressbrook Dam | |
| Location | Biarra, Somerset Region, Queensland, Australia |
| Coordinates | 27.2633°S 152.206°E |
| Type | reservoir |
| Primary inflows | Cressbrook Creek |
| Primary outflows | Cressbrook Creek |
| Catchment area | 326 km2 (126 sq mi) |
| Basin countries | Australia |
| Surface area | 5.17 km2 (2.00 sq mi) |
| Max. depth | 34 m (112 ft) |
| Water volume | 81,800 ML (2,890×106 cu ft) |
| Surface elevation | 280 m (920 ft) |
The impoundment of the dam, Lake Cressbrook, has a surface area of 517[1] hectares with a total capacity of 81,800 mega-litres when full (78,700 ML usable) at an average depth of 15.8 metres. The lake is considered for a 400 MW / 4 GWh (10-hour) pumped-storage hydroelectricity project.[2][3]
The catchment also contains Perseverance Dam, which is located 10 km upstream of Cressbrook Dam.
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A Stocked Impoundment Permit is required to fish in the dam.[4]
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