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.

Quick Facts Location, Coordinates ...

Cressbrook Dam
Lake Cressbrook, only 12 percent full, 2008
Cressbrook Dam
Location	Biarra, Somerset Region, Queensland, Australia
Coordinates	27.2633°S 152.206°E / -27.2633; 152.206
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 (2,890×10^6 cu ft)
Surface elevation	280 m (920 ft)

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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]

The catchment also contains Perseverance Dam, which is located 10 km upstream of Cressbrook Dam.

A Stocked Impoundment Permit is required to fish in the dam.^[3]