Splityard Creek Dam

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Splityard Creek Dam
Splityard Creek Dam.JPG
Australia Queensland relief location map.jpg
Red pog.svg
Location of the Splityard Creek Dam
in Queensland
CountryAustralia
Location South East Queensland
Coordinates 27°22′16″S152°38′13″E / 27.37111°S 152.63694°E / -27.37111; 152.63694 Coordinates: 27°22′16″S152°38′13″E / 27.37111°S 152.63694°E / -27.37111; 152.63694
Purpose Hydroelectricity [1]
StatusOperational
Construction began1977 (1977)
Opening date1980 (1980)
Dam and spillways
Type of dam Embankment dam
ImpoundsPryde Creek
Height76 m (249 ft) [1]
Length1,140 m (3,740 ft) [1]
Dam volume69×10^3 m3 (2.4×10^6 cu ft) [1]
Spillway type Uncontrolled
Spillway capacity570 m3/s (20,000 cu ft/s) [1]
Reservoir
Total capacity28,700 ML (6,300×10^6 imp gal; 7,600×10^6 US gal) [1]
Catchment area 3.8 km2 (1.5 sq mi) [1]
Surface area105 ha (260 acres) [1]
Maximum width294 m (965 ft)
Wivenhoe Power Station
Operator(s) CS Energy
Commission date1984 (1984)
Type Pumped-storage
Turbines 2
Installed capacity 500 megawatts (670,000 hp)
Website
Wivenhoe Power Station

The Splityard Creek Dam is a rock and earth-fill embankment dam with an un-gated spillway across the Pryde Creek that is located in the South East region of Queensland, Australia. The sole purpose of the dam is for the generation of hydroelectricity. [1] The impounded reservoir is called the Splityard Creek Reservoir.

Contents

Location and features

The dam is located 30 kilometres (19 mi) northwest of Ipswich in the Somerset Region and forms the upper reservoir for the Wivenhoe Power Station.

Construction commenced in 1977 and was completed in 1980 by contractors Thiess Brothers and John Holland. [2] The rock and earthfill dam structure is 76 metres (249 ft) high and 1,140 metres (3,740 ft) long. The 3,371-thousand-cubic-metre (119.0×10^6 cu ft) dam wall holds back the 28,600-megalitre (6,300×10^6 imp gal; 7,600×10^6 US gal) reservoir when at full capacity. From a catchment area of 3.8 square kilometres (1.5 sq mi), the dam creates a reservoir with a surface area of 102 hectares (250 acres). The uncontrolled un-gated spillway has a discharge capacity of 570 cubic metres per second (20,000 cu ft/s). [1] Transferred to CleanCo Queensland in October 2019.

Power station

Owned by CleanCo Queensland and operated by CS Energy, Wivenhoe Power Station is located on the eastern side of Wivenhoe Dam, north west of Brisbane. The station, which began commercial operation in 1984, was Queensland's first pumped-storage hydro-electric plant. It is operated remotely from an operating centre used to manage the Queensland electricity grid. [3]

The dam's water capacity is enough for the power station to run at full load for approximately ten hours. Using both pumps, this water can be replaced in about 14 hours. The pumped storage power station consists of two circular concrete silos, each of about 32 metres (105 ft) internal diameter. Each of the silos houses a 250 megawatts (340,000 hp) turbine generator and pump set, giving a total capacity of 500 megawatts (670,000 hp). [3]

Recreation

Public access including swimming is banned from the dam due to strong currents and submerged hazards.

See also

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References

  1. 1 2 3 4 5 6 7 8 9 10 "Register of Large Dams in Australia" (Excel (requires download)). Dams information. Australian National Committee on Large Dams. 2010. Retrieved 4 July 2014.
  2. "Wivenhoe Power Station: Official Opening" (PDF). Queensland Flood Commission. Retrieved 4 January 2019.
  3. 1 2 "Wivenhoe Dam". Seqwater . Retrieved 6 December 2012.