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Crotty Dam information


Crotty Dam
Crotty Dam (at right) aerial shot from the east
Crotty Dam is located in Tasmania
Crotty Dam
Location of the Crotty Dam in Tasmania
CountryAustralia
LocationWest Coast Tasmania
Coordinates42°09′35″S 145°37′00″E / 42.15972°S 145.61667°E / -42.15972; 145.61667
PurposePower
StatusOperational
Opening date1991 (1991)
Owner(s)Hydro Tasmania
Dam and spillways
Type of damEmbankment dam
ImpoundsKing River
Height83 metres (272 ft)
Length245 metres (804 ft)
Width (crest)300 millimetres (12 in)
Dam volume770×10^3 m3 (27×10^6 cu ft)
Spillways1
Spillway typeControlled and uncontrolled
Spillway capacity
  • 245 m3/s (8,700 cu ft/s) chute on dam face
  • 190 m3/s (6,700 cu ft/s) valve in tunnel
Reservoir
CreatesLake Burbury
Total capacity1,081,420 ML (38,190×10^6 cu ft)
Active capacity1,065,000 ML (37,600×10^6 cu ft)
Catchment area559 km2 (216 sq mi)
Surface area53,250×10^3 m2 (573.2×10^6 sq ft)
John Butters Power Station
Coordinates42°09′21″S 145°32′04″E / 42.15583°S 145.53444°E / -42.15583; 145.53444
Operator(s)Hydro Tasmania
Commission date1992 (1992)
TypeConventional
Hydraulic head184 metres (604 ft)
Turbines1 x 144 MW (193,000 hp)
Fuji Francis turbine
Installed capacity144 megawatts (193,000 hp)
Capacity factor0.9
Annual generation576 gigawatt-hours (2,070 TJ)
Website
hydro.com.au/energy/our-power-stations/king-yolande

The Crotty Dam, also known during construction as the King Dam,[1] or the King River Dam on initial approval,[2] is a rockfill embankment dam with a controlled and uncontrolled spillway across the King River, between Mount Jukes and Mount Huxley, located in Western Tasmania, Australia.

The impounded reservoir is called Lake Burbury.

The dam was constructed in 1991 as part of the King River Power Development Scheme, by the Hydro Electric Corporation (TAS) for the purpose of generating hydro-electric power via the John Butters Power Station located 8 kilometres (5.0 mi) below the dam wall.[3]

  1. ^ HEC (1983) King River Power Development, HEC Public Relations, December 1983
  2. ^ "Anthony and King Power Developments approved". Cross Currents (70). Hydro-Electric Commission. 1983. ISSN 0811-4803.
  3. ^ "King - Yolande". Energy: Our power stations. Hydro Tasmania. Retrieved 21 June 2015.

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