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{{Use Australian English|date=May 2013}}{{Use dmy dates|date=
{{Infobox dam
| name = Tantangara Dam
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| dam_width_base =
| dam_volume = {{convert|73800|m3}}
| dam_elevation_crest = {{convert|1230|m}} [[Australian Height Datum|AHD]] {{Dubious|Talk Normal Elevation?|date=August 2023}}
| dam_crosses = [[Murrumbidgee River]]
| spillway_count = 1
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| res_catchment = {{convert|460|km2}}
| res_surface = {{convert|2117.7|ha}}
| res_elevation = {{convert|
| res_max_depth = {{convert|19|m}}
| res_max_length =
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}}
'''Tantangara Dam''' is a major ungated [[Gravity dam|concrete gravity]] [[dam]] with [[Spillway#chute|concrete chute spillway]] across the [[Murrumbidgee River]] in [[Tantangara, New South Wales|Tantangara]], upstream of [[
==Location and features==
Commenced in 1958 and completed in 1960, the Tantangara Dam is located on the Murrumbidgee River, approximately {{cvt|6|km}} downstream of its [[confluence]] with Gurrangorambla Creek and is wholly within the [[Kosciuszko National Park]]. Her Royal Highness [[Princess Alexandra, The Honourable Lady Ogilvy|Princess Alexandra of Kent]] visited the dam in 1959, during its construction.<ref>{{cite web|url=http://acms.sl.nsw.gov.au/item/itemDetailPaged.aspx?itemID=18907|title=HRH Princess Alexandra of Kent visits the Snowy Mountains Scheme, 1959|date=28 September 1959|access-date=3 May 2013|work=Manuscripts, Oral History and Picture|publisher=[[State Library of New South Wales]]|author=Australian Photographic Agency}}</ref>
The dam was constructed by Utah-Brown & Root Sudamericana on behalf of the [[Snowy Mountains Hydro-Electric Authority]], and is now managed by Snowy Hydro Limited. The concrete gravity dam of {{cvt|73800|m3|ft3}} is {{cvt|45|m|ft}} high, with a crest length of {{cvt|216|m|ft}}. At 100 per cent capacity, the dam wall holds back {{cvt|254099|ML|acre ft}} of water. The surface area of Tantangara Reservoir is {{cvt|2117.7|ha}} and the catchment area is {{cvt|460|km2}}. The spillway across the Murrumbidgee River is capable of discharging {{cvt|900|m3/s|ft3/s}}.<ref name=ancold>{{cite web|url=http://www.ancold.org.au/wp-content/uploads/2012/10/Dams-Australia-2010-v1-for-website.xls|format=Excel (requires download)|title=Register of Large Dams in Australia|publisher=The Australian National Committee on Large Dams Incorporated|year=2010|access-date=2 May 2013|work=Dams information|archive-date=12 December 2013|archive-url=https://web.archive.org/web/20131212120804/http://www.ancold.org.au/wp-content/uploads/2012/10/Dams-Australia-2010-v1-for-website.xls|url-status=dead}}</ref>
Water flows {{cvt|16.6|km}} from Tantangara Reservoir to Lake Eucumbene via the {{cvt|3.1|–|3.35|m|adj=on}} diameter Murrumbidgee-Eucumbene tunnel falling {{cvt|40|m}} in the process. Flow is controlled by a {{cvt|1.83|×|2.13|m}} regulating gate such that a maximum of {{cvt|20|m3/s|ft3/s}} is allowed. Flow downstream into the Murrumbidgee River is controlled at the dam and comprises two shafts, {{cvt|2.13|×|3.05|m}} at the outlet tower and tapering to {{cvt|2.13|m}} diameter before passing through a {{cvt|1.50|m}} diameter nozzle to the river diversion tunnel, with a capacity of
{{cvt|70.8|m3/s}}.<ref>{{cite book|chapter=Schedule 2: Water Management Works|title=Snowy Water Licence|date=4 October 2011|page=45|url=http://www.water.nsw.gov.au/ArticleDocuments/35/utilities_snowy_lic_snowy_water_licence_october2011.pdf.aspx|access-date=8 May 2013|publisher=New South Wales Office of Water
===Water flows===
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====Power station====
The reservoir is a key part of the [[Snowy 2.0 Pumped Storage Power Station]].<ref name="shc">{{cite news |last=Ziffer |first=Daniel |date=6 January 2023 |title=Snowy Hydro could change our electricity grid and bring cheap power. But we have to build it |url=https://www.abc.net.au/news/2023-01-06/snowy-hydro-could-change-our-electricity-grid-bring-cheap-power/101795640 |
==Recreation==
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* {{cite web|url=http://www.environment.nsw.gov.au/ieo/Murrumbidgee/maplg.htm|title=Murrumbidgee and Lake George catchments|format=map|work=Office of Environment and Heritage|publisher=[[Government of New South Wales]]}}
* {{cite book|url=http://www.water.nsw.gov.au/ArticleDocuments/34/water_environment_snowy_report_snowy_flow_expert_panel_report.pdf.aspx|date=May 2009|publisher=NSW Department of Water and Energy|isbn=978-0-7347-5656-5|title=Expert panel environmental flow assessment of various rivers affected by the Snowy Mountains Scheme|author1=Bevitt, R.|author2=Erskine, W.|author3=Gillespie, G.|author4=Harriss, J.|author5=Lake, P.|author6=Miners, B.|author7=Varley, I.}}
*{{cite web|url=http://www.actew.com.au/Water%20and%20Sewerage%20Systems/ACT%20Water%20Supply%20System/ACT%20Water%20Supply%20Map.aspx|title=Interactive ACT water supply map|publisher=[[ACTEW Corporation]]|year=2011|access-date=3 May 2013|archive-date=3 May 2013|archive-url=https://web.archive.org/web/20130503041638/http://www.actew.com.au/Water%20and%20Sewerage%20Systems/ACT%20Water%20Supply%20System/ACT%20Water%20Supply%20Map.aspx|url-status=dead}}
*{{cite web|url=http://www.geotech.net.au/media/Documents/Research%20pdfs/Two_Unusual_Cofferdams.pdf|title=Two unusual cofferdams|author1=Keays, R. H.|author2=Loidl, D.|work=Research|publisher=Geotech Pty. Ltd}}
*{{cite web|url=http://www.environment.nsw.gov.au/resources/parks/southern/Kosciuszko_National_Park/6KosiGuide2012Trails.pdf|title=Trails in Kosciuszko|year=2012|work=Kosciuszko National Park Guide|publisher=[[
{{Snowy Mountains Scheme |state=autocollapse}}
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