Burrendong Dam

dam in Australia

The Burrendong Dam is a major dam on the Macquarie River in New South Wales, Australia. It is upriver of Wellington in the central west region. It is an embankment style gated dam. The wall is filled with rock and has a clay core. The dam was built and is used for flood mitigation, irrigation, water supply and hydro-electric power generation. The dam creates Lake Burrendong and is filled by the Macquarie and Cudgegong rivers and Meroo Creek.

Lake Burrendong
A picnic area by the lake.
LocationNear Wellington, New South Wales, Australia
Coordinates32°40′4″S 149°6′25″E / 32.66778°S 149.10694°E / -32.66778; 149.10694
Primary inflowsMacquarie River, Cudgegong River and Meroo Creek
Primary outflowsMacquarie River
Catchment area13,900 square kilometres (5,400 sq mi)
Basin countriesAustralia
Built1967 (1967)
Max. length1,113 metres (3,652 ft)
Surface area8,900 hectares (22,000 acres)
Average depth57 metres (187 ft)
Max. depth344 metres (1,129 ft)
Water volume6,345 cubic metres (224,100 cu ft)
Surface elevation344 metres (1,129 ft) AMSL

The lake formed by the dam, named Lake Burrendong, is popular for fishing and general tourism.[3][4]

History and location change

The dam was built by the New South Wales Water Conservation & Irrigation Commission. Construction began in 1958. It finished in 1967. It was built to reduce flooding, for irrigation, and to supply a relatively constant water supply. The dam is about 30 kilometres (19 mi) southeast of Wellington in the Wellington Shire local government area. The name Burrendong comes from the Wiradjuri word for koala (burrandhang).[1]

Features change

The dam wall is 76 metres (249 ft) high and is 1,116 metres (3,661 ft) long. Normal water depth is 57 metres (187 ft). When the dam is full the water level is 344 metres (1,129 ft) AHD. At full capacity the dam holds 1,188 gigalitres (4.20×1010 cu ft), with an additional flood mitigation capacity of 480,000 megalitres (17,000×10^6 cu ft), and has a surface area of 7,200 hectares (18,000 acres). The dam collects water from an area of 13,900 square kilometres (5,400 sq mi). The spillway on the dam is a gated concrete chute, able to release 13,720 cubic metres per second (485,000 cu ft/s).[1][2]

A major upgrade took place place between 2010 and is expected to be completed in 2015. The project costs AU$32 million. It will ensure the dam reaches modern safety standards. During the upgrade the main dam will be raised 1.8 metres (5 ft 11 in), the current spillway will be modified and another spillway added.[1][5]

Power generation change

The dam includes a hydro-electric power station. This was completed in August 1996. It was opened by the Premier of New South Wales, Bob Carr, on 9 February 1999. The station can generate up to 19 megawatts (25,000 hp) of electricity and each year the power station generates about 50.9 gigawatt-hours (183 TJ).[2] The station was originally operated by Power Facilities Pty Limited. It is now managed by AGL Energy.[6]

References change

  1. 1.0 1.1 1.2 1.3 "Burrendong Dam" (PDF). State Water. Government of New South Wales. Archived from the original (PDF) on 18 February 2011. Retrieved 14 November 2013.
  2. 2.0 2.1 2.2 "Register of Large Dams in Australia". Dams information. The Australian National Committee on Large Dams Incorporated. 2010. Archived from the original (Excel (requires download)) on 12 December 2013. Retrieved 14 November 2013.
  3. Swanson, Peter (2006). "Lake Burrendong - Wellington / Mumbil, NSW". Sweetwater Fishing. Sweetwater Fishing Australia. Retrieved 13 April 2013.
  4. "Lake Burrendong". Crown Land: State Parks. Trade & Investment NSW, Government of New South Wales. 2010. Archived from the original on 9 April 2013. Retrieved 14 November 2013.
  5. "Burrendong Dam Safety Upgrade" (PDF). Factsheet. State Water of New South Wales. November 2012. Archived from the original (PDF) on 20 April 2013. Retrieved 14 November 2013.
  6. "Burrendong Power Station, New South Wales". Power generation portfolio: Hydro-electric. AGL Energy Limited. Retrieved 14 November 2013.