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| Jounama Dam | |
|---|---|
| Name | Jounama Dam |
| Location | Snowy Mountains, New South Wales, Australia |
| Coordinates | 35°51′S 148°53′E |
| Type | Rock-fill with clay core |
| Length | 390 m |
| Height | 44 m |
| Opened | 1968 |
| Operator | Snowy Hydro Limited |
| Reservoir | Jounama Pondage |
| Capacity | 43,000 ML |
Jounama Dam Jounama Dam is a rock-fill embankment dam with a clay core in the Snowy Mountains region of New South Wales, Australia, constructed as part of mid‑20th century hydroelectric and irrigation development. The project was implemented during an era shaped by post‑World War II infrastructure programs and involved agencies and contractors associated with the Snowy Mountains Scheme and state authorities. The site lies within a landscape influenced by the Australian Alps, Kosciuszko National Park, and river systems that feed into major catchments.
The dam is sited on the Tumut River within the Snowy Mountains near the village of Talbingo and the towns of Adaminaby and Cooma, positioned in the shires administered by the Snowy Monaro Regional Council and close to the boundaries of Kosciuszko National Park, Australian Alps, and Brindabella ranges. The catchment interacts with headwaters that connect to the Murray–Darling Basin and downstream systems influenced by the Murrumbidgee and Murray rivers and historic exploration routes linked to figures like Hamilton Hume and William Hovell. The regional climate is modulated by Alpine weather patterns and continental influences studied by the Bureau of Meteorology and climatic research at institutions such as the Australian National University and CSIRO.
Designed during the era of the Snowy Mountains Scheme, the dam employed engineering practices contemporaneous with projects like the Tantangara Dam and Blowering Dam and contractors who had worked on structures such as the Tumut 1 and Tumut 2 power stations. Structural concepts derive from rock-fill with clay core techniques used globally in projects like the Aswan High Dam and Hoover Dam for embankment principles, while Australian regulators including state engineering departments and standards bodies oversaw specifications akin to those applied on the Hume Dam and Warragamba Dam. Construction in the 1950s–1960s involved logistics comparable to the Snowy Mountains Hydro Electric Authority, with equipment and workforce organization paralleling postwar infrastructure programs and influenced by policy debates in the New South Wales Parliament and federal authorities.
The impounded water, known as Jounama Pondage, forms a regulated storage that interfaces hydrologically with the Tumut River system, upstream inflows from catchments studied by the Murray–Darling Basin Authority and downstream releases that affect storages such as Blowering Reservoir and Lake Eucumbene. Water balance and evaporation processes are monitored with methodologies used by the Bureau of Meteorology and modeled in hydrological studies at the University of New South Wales and Monash University, while ecological flow regimes intersect with legislation and frameworks similar to those debated in the Parliament of New South Wales and national environmental agencies.
Operated by Snowy Hydro Limited in coordination with the Snowy Mountains Scheme, the facility supports hydroelectric generation, regulated releases for irrigation linked to the Murray–Darling Basin Authority and water trading frameworks, and flood mitigation functions that complement infrastructure like the Talbingo Dam and Cooma reservoirs. Its operational schedule aligns with electricity dispatch systems influenced by the Australian Energy Market Operator and integrates with renewable and grid management strategies discussed by energy policy bodies and research centers at the University of Sydney and the Grattan Institute.
Construction and operation have had ecological and social consequences comparable to those documented for other Alpine and river regulation projects, affecting habitats monitored by the New South Wales National Parks and Wildlife Service and conservation groups such as the Australian Conservation Foundation and World Wide Fund for Nature Australia. Impacts on species, riparian corridors, and cold‑water ecosystems have been assessed in studies from institutions like CSIRO, Charles Sturt University, and the University of Canberra, while Indigenous heritage and land use issues have involved consultation processes similar to those engaging the Australian Institute of Aboriginal and Torres Strait Islander Studies and local Aboriginal Land Councils. Policy responses have referenced frameworks used in environmental impact assessments presented to state tribunals and federal oversight bodies.
The pondage and surrounding precinct support recreational activities and tourism economies comparable to those at Lake Jindabyne and Lake Eucumbene, attracting anglers, campers, hikers along alpine trails, and visitors accessing facilities managed by the Snowy Monaro Regional Council and park services like Kosciuszko National Park rangers. Regional promotion ties into tourism strategies from Destination NSW and operator services provided by private tour operators, while outdoor pursuits intersect with sporting organizations such as Fishing Clubs, Australian Canoeing, and mountain biking groups that utilize trails in the Australian Alps.
Kosciuszko National Park Snowy Mountains Scheme Tumut River Snowy Hydro Limited Talbingo, New South Wales Adaminaby Cooma, New South Wales Murray–Darling Basin Authority Bureau of Meteorology CSIRO Australian National University University of New South Wales Monash University University of Sydney Grattan Institute Charles Sturt University University of Canberra Australian Conservation Foundation World Wide Fund for Nature Australia Australian Institute of Aboriginal and Torres Strait Islander Studies Snowy Monaro Regional Council Hume and Hovell Tumut 1 Power Station Tumut 2 Power Station Tantangara Dam Blowering Dam Hume Dam Warragamba Dam Aswan High Dam Hoover Dam Lake Jindabyne Lake Eucumbene Talbingo Dam Fishing Clubs Australian Canoeing Destination NSW Parliament of New South Wales Murray River Murrumbidgee River Kosciuszko Australian Alps Brindabella Range Snowy Mountains Hydro Electric Authority New South Wales National Parks and Wildlife Service Indigenous land councils Talbingo Hydroelectricity in Australia Electricity infrastructure in Australia Renewable energy in Australia Environmental impact assessment Water trading in Australia Irrigation in Australia Flood control Recreational fishing in Australia Campgrounds in New South Wales Mountain biking in Australia Hiking in Australia Tourism in New South Wales Postwar reconstruction Infrastructure in Australia Federalism in Australia State of New South Wales Australian Capital Territory Snowy Scheme museums Hydrology Catchment management Ecosystem restoration Riparian zone Cold‑water ecosystems