Lake Margaret (Tasmania)

For other uses, see Lake Margaret.

Lake Margaret
Lake Margaret (Tasmania) is located in Tasmania
Lake Margaret (Tasmania)
Location in Tasmania
CountryAustralia
LocationWest Coast, Tasmania
Coordinates41°59′30.3″S 145°35′15″E / 41.991750°S 145.58750°E / -41.991750; 145.58750
PurposePower
StatusOperational
Opening date1918
Built byMount Lyell Mining and Railway Company
Owner(s)Hydro Tasmania
Dam and spillways
Type of damGravity dam
ImpoundsYolande River
Height (foundation)17 m (56 ft)
Length243 m (797 ft)
Dam volume6,000 m3 (210,000 cu ft)
Spillways1
Spillway typeUncontrolled
Spillway capacity29 m3/s (1,000 cu ft/s)
Reservoir
CreatesLake Margaret
Catchment area21 km2 (8.1 sq mi)
Surface area170 ha (420 acres)
Normal elevation660 m (2,170 ft) AHD
Lake Margaret Power Station
Operator(s)Hydro Tasmania
Commission date
  1. 1914 – 1930
  2. 1931; 2010
Decommission date
  1. Continual use
  2. 1994; since recommissioned
TypeConventional
Turbines
Installed capacity
  1. 8.3 MW (11,100 hp)
  2. 3.2 MW (4,300 hp)
Annual generation48 GWh (170 TJ)
[1][2][3]

Lake Margaret is a concrete-faced gravity dam with an uncontrolled spillway across the Yolande River, located on the north side of Mount Sedgwick, in the West Coast Range, West Coast of Tasmania, Australia.

The impounded reservoir is also called Lake Margaret.[1]

The dam was constructed in 1918 by the Mount Lyell Mining and Railway Company for the purpose of generating hydro-electric power via the Lake Margaret Power Station, which is located below the dam wall. Following the closure of the Mount Lyell Mining and Railway Company, in 1985 the control of the dam, lake, and power station was transferred to Hydro Tasmania.[2]

  1. ^ a b "Register of Large Dams in Australia" (Excel (requires download)). The Australian National Committee on Large Dams Incorporated. 2012. Retrieved 25 May 2018.
  2. ^ a b "King – Yolande". Energy: Our power stations. Hydro Tasmania. Retrieved 25 May 2018.
  3. ^ Cite error: The named reference bonzle was invoked but never defined (see the help page).