{{Short description|Dam and hydroelectric power station in Tasmania, Australia}} {{Use Australian English|date=June 2015}} {{Use dmy dates|date=May 2026}} {{Infobox dam | name = Catagunya Dam | name_official = | image = | image_size = 280 | image_caption = | image_alt = | location_map = Australia Tasmania | location_map_size = 280 | location_map_caption = Location of the dam in [[Tasmania]] | location_map_alt = | coordinates = {{coord|42|26|24|S|146|35|24|E|region:AU-TAS_type:landmark|display=inline,title}} | country = Australia | location = [[Central Highlands (Tasmania)|Central Highlands]] [[Tasmania]] | purpose = P | status = O | construction_began = | opening = {{start date|1962}} | demolished = | cost = | owner = [[Hydro Tasmania]] | operator = | dam_type = G | dam_crosses = [[River Derwent (Tasmania)|River Derwent]] | dam_height = {{cvt|49|m}} | dam_height_foundation= | dam_height_thalweg = | dam_length = {{cvt|282|m}} | dam_elevation_crest = | dam_width_crest = | dam_width_base = | dam_volume = {{cvt|92|e3m3}} | spillway_count = 1 | spillway_type = [[Spillway#Types|Uncontrolled]] | spillway_capacity = {{cvt|3594|m3/s}} | res_name = Lake Catagunya | res_capacity_total = {{cvt|25640|ML|acre.ft}} | res_capacity_active = | res_capacity_inactive= | res_catchment = {{cvt|2713|km2}} | res_surface = {{cvt|21.9|ha}} | res_max_length = | res_max_width = | res_max_depth = | res_elevation = | res_tidal_range = | plant_name = Catagunya Power Station | plant_coordinates = {{coord|42|27|00|S|146|35|24|E|type:landmark}} | plant_operator = [[Hydro Tasmania]] | plant_commission = {{start date|1960}} | plant_decommission = | plant_type = R | plant_hydraulic_head = {{cvt|44|m}} | plant_turbines = 2 x {{cvt|25|MW|adj=on|abbr=on}} Boving [[Francis turbine|Francis-type]] [[Water turbine|turbines]] | plant_capacity = {{cvt|48|MW}} | plant_capacity_factor= 0.8 | plant_annual_gen = {{cvt|237|GWh}} | website = {{URL|hydro.com.au/clean-energy/our-power-stations/derwent|hydro.com.au}} | extra = <ref name=ANCOLD/> }}
The '''Catagunya Dam''' is a [[gravity dam]] across the [[River Derwent (Tasmania)|Lower River Derwent]], located in the [[Central Highlands (Tasmania)|Central Highlands]] region of [[Tasmania]], Australia. Completed in 1962, the resultant [[reservoir]], Lake Catagunya, was established for the purpose of generating [[hydroelectricity]] via the adjacent '''Catagunya Power Station''', a [[Run-of-the-river hydroelectricity|run-of-the-river]] hydroelectric [[power station]]. Both the dam and the power station are owned and operated by [[Hydro Tasmania]].<ref name=hydrotech/>
== Dam overview == Built by the [[Hydro Tasmania|Hydro Electric Corporation (TAS)]], the concrete dam wall is {{convert|49|m}} high and {{convert|282|m}} long. When full, Lake Catagunya has capacity of {{convert|25640|ML|acre.ft|lk=on}} and covers {{convert|219|ha}}, drawn from a [[drainage basin|catchment area]] of {{convert|2713|km2}}. The [[Spillway#Types|uncontrolled spillway]] has a flow capacity of {{convert|3594|m3/s}}.<ref name=ANCOLD>{{cite web |title=Register of Large Dams Australia-2015 |date=January 2022 |access-date=2026-03-05 |url=https://ancold.org.au/information-resources/dams-information/ |work=[[ANCOLD]] |format=[[Microsoft Excel|Excel]]. Requires download. Row 95}}</ref>
The dam received a Historic Engineering Marker from [[Engineers Australia]] as part of its [[Engineers Australia#Engineering Heritage Recognition Program|Engineering Heritage Recognition Program]].<ref>{{cite web|url=https://portal.engineersaustralia.org.au/heritage/catagunya-dam-derwent-river-1962|title=Catagunya Dam, Derwent River, 1962-|publisher=Engineers Australia|access-date=2020-04-27}}</ref>
== Hydroelectric power station == Part of the [[River Derwent (Tasmania)|Derwent]] scheme that comprises eleven hydroelectric power stations, the Catagunya Power Station is the seventh power station in the scheme and the third power station in the lower run-of-river system. The power station is located above ground, below Lake Catagunya. Water from the Derwent from Wayatinah Power Station and spill from Wayatinah Dam flows into Lake Catagunya. Water in the lake is diverted by a flume at the dam to the radial gates. It then descends {{convert|49|m}} through two steel [[penstocks]] to the power station.<ref name=hydrotech/><ref name=hydro>{{cite web |url=https://www.hydro.com.au/clean-energy/our-power-stations/derwent |title=Derwent: Catagunya Power Station |work=Energy |publisher=[[Hydro Tasmania]] |accessdate=18 June 2023 |archive-url=https://web.archive.org/web/20220304020415/https://www.hydro.com.au/clean-energy/our-power-stations/derwent |archive-date=4 March 2022 |url-status=live |df=dmy-all}}</ref>
The power station was commissioned in 1962 by the Hydro Electric Corporation and the station has two {{convert|25|MW|e3hp|lk=on|adj=on}} Boving [[Francis turbine|Francis-type]] [[Water turbine|turbines]], with a combined generating capacity of {{convert|48|MW}} of electricity. Within the station building, each turbine has a semi-embedded spiral casing, and water flow is controlled via twin radial gates installed at the entrance to each [[penstock]] and designed to cut off full flow. No inlet valves are installed in the station. The station output, estimated to be {{convert|237|GWh|TJ|lk=on}} annually,<ref name=ANCOLD/> is fed to [[TasNetworks]]' transmission grid via two 11 k[[voltage|V]]/220 kV [[ASEA]] generator transformers to the outdoor switchyard.<ref name=hydrotech>{{cite web |url=https://www.hydro.com.au/docs/default-source/clean-energy/our-power-stations/power-station-fact-sheets/catagunya-power-station-fact-sheet.pdf?sfvrsn=2dcd9b28_2 |title=Catagunya Power Station Fact Sheet: Technical fact sheet |work=Energy: Our power stations |publisher=[[Hydro Tasmania]] |access-date=18 June 2023 |archive-url=https://web.archive.org/web/20230618052455/https://www.hydro.com.au/docs/default-source/clean-energy/our-power-stations/power-station-fact-sheets/catagunya-power-station-fact-sheet.pdf?sfvrsn=2dcd9b28_2 |archive-date=18 June 2023 |url-status=live |df=dmy-all}}</ref>
== See also == {{stack|{{Portal|Renewable energy|Australia|Water}}}} * [[List of power stations in Tasmania]] * [[List of reservoirs and dams in Australia#Tasmania|List of reservoirs and dams in Tasmania]] * [[List of run-of-the-river hydroelectric power stations]]
==References== {{reflist}}
==External links== * {{cite web |title=Tasmanian Hydro Electric Schemes {{!}} Derwent catchment {{!}} Lower Derwent |work=[[Hydro Tasmania]]|date= |access-date= |url=http://www.hydro.com.au/home/Energy/Tasmanian+Hydro+Electric+Schemes/Catchment+Areas/Derwent+Catchment/The+Lower+Derwent.htm |archive-url=https://web.archive.org/web/20060919104726/http://www.hydro.com.au/home/Energy/Tasmanian+Hydro+Electric+Schemes/Catchment+Areas/Derwent+Catchment/The+Lower+Derwent.htm |archive-date=2006-09-19 }}
{{River Derwent Dams|state=collapsed}} {{Dams in Tasmania|state=collapsed}} {{EnergyTasmania}} {{CentralHighlandsTasmania |state=autocollapse}}
[[Category:1960 establishments in Australia]] [[Category:Central Highlands (Tasmania)]] [[Category:Dams completed in 1962]] [[Category:Energy infrastructure completed in 1960]] [[Category:Gravity dams]] [[Category:Hydroelectric power stations in Tasmania]] [[Category:Hydro Tasmania dams]] [[Category:Run-of-the-river power stations]]