Maroon Dam
The Maroon Dam is a rock and earth-fill embankment dam with an un-gated spillway across the Burnett Creek that is located in the South East region of Queensland, Australia. The main purpose of the dam is for irrigation of the Scenic Rim Regional Council region. The impounded reservoir is also called Maroon Dam.
Location and features
The dam is located 64 kilometres (40 mi) southwest of Beaudesert. The primary inflow of the reservoir is Burnett Creek, a tributary of Logan River.
Construction of the dam commenced in 1969 and was completed in 1973. The rock and earthfill dam structure is 46.3 metres (152 ft) high and 451 metres (1,480 ft) long. The 1,620-thousand-cubic-metre (57×10^6 cu ft) dam wall holds back the 44,300-megalitre (9.7×109 imp gal; 1.17×1010 US gal) reservoir when at full capacity. The dam has a clearance of 10.4 metres (34 ft) above full supply level for flood mitigation purposes. This allows for a full operating level at 37,100 megalitres (8.2×109 imp gal; 9.8×109 US gal). From a catchment area of 160 square kilometres (62 sq mi) that lies within the Scenic Rim at the foot of the McPherson Range, the dam creates an unnamed reservoir, with a surface area of 310 hectares (770 acres). The uncontrolled un-gated spillway has a discharge capacity of 567 cubic metres per second (20,000 cu ft/s), and is situated 43.9 metres (144 ft) above the original stream bed. Initially managed by the SunWater, management of the dam was transferred to Seqwater in July 2008.
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