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The El Chocón Dam (Spanish: Represa El Chocón) is the fourth of the five dams on the Limay River in the northwestern Argentine Patagonia (the Comahue region), at 381 metres (1,250 ft) above mean sea level. El Chocón is on the Limay River at about 80 km (50 mi) upstream of its confluence with the Neuquén River.

El Chocón Dam
The El Chocón Reservoir, as seen from the ISS. The dam is located on the bottom part of the picture.
Official nameEmbalse Ezequiel Ramos Mexía
LocationVilla El Chocon, Argentina
Coordinates39°15′57″S 68°45′23″W
Opening date1973
Owner(s)Hidronor
Dam and spillways
ImpoundsLimay River
Height94 m (308 ft)
Length2,500 m (8,200 ft)
Reservoir
CreatesEl Chocón Reservoir
Total capacity20.155 km3 (16,340,000 acre⋅ft)
Surface area816 km2 (315 sq mi)
Power Station
Turbines6 × 210 MW
Installed capacity1,260 MW
Annual generation2,700 GWh

El Chocón is used to regulate the flow of the Limay River, for irrigation, and for the generation of hydroelectricity. Its power station is the largest hydroelectric power plant in Patagonia, with a capacity of 1,260 megawatts (1,690,000 hp). It was built by the state-owned company Hidronor (Hidroeléctrica Norpatagónica). It started operating in 1973, and achieved full capacity in 1978. In the period 1974–1995 it produced an annual average of 2,700 gigawatt-hours (9,700 TJ). In 1993 it was privatized, with an exploitation concession granted to Hidroeléctrica El Chocón S. A.

While the formal name of the project is Embalse Ezequiel Ramos Mexía, in common use it ended up acquiring the name of the settlement that served as the construction's base of operations, Villa El Chocón (a small town, population 957, as of 2001).

El Chocón is part of a larger engineering scheme that also includes the Cerros Colorados Complex, on the Neuquén River. The Hydroelectric Complex which holds El Chocón and Arroyito Hydroelectric Power Plants, is located in the region known as Comahue, which is formed by the Argentine provinces of Río Negro and Neuquén and the southern area of the Buenos Aires and La Pampa provinces.


Technical details


The dam is made of earth, with a concrete spillway. About 13,000,000 cubic metres (460,000,000 cu ft) of materials were used. It measures 2,500 metres (8,200 ft) in length. Its maximum height over the river bed is 87 metres (285 ft).

The reservoir has a maximum area of 860 km2 (332 sq mi), a mean depth of 24.7 metres (81 ft) (maximum 60 metres (200 ft)), and a maximum volume of 206,000,000,000 cubic metres (7.3×1012 cu ft). It is used for sailing, sport fishing and other forms of recreation by locals and tourists.

The power plant has six vertical Francis turbines, with a nominal power of 210 megawatts (280,000 hp) each, which rotate at 88 rpm. The apparent powers are of 200 MVA for each generator, and 180 MVA for each transformer.

Material:[further explanation needed] Hidroeléctrica El Chocón S.A.


See also





References



    На других языках


    [de] El Chocón

    El Chocón (spanisch: Embalse El Chocón) ist die vierte von fünf Talsperren am Río Limay im nordwestlichen Teil von Patagonien (der Comahue-Region) in Argentinien. Der Stausee liegt auf der Grenze der Provinzen Neuquén und Río Negro. Der offizielle Name der Talsperre ist Embalse Ezequiel Ramos Mexía (Ezequiel-Ramos-Mexía-Stausee), aber formlos wird sie auch nach der Siedlung benannt, die in den 1970er Jahren als Camp der Bauarbeiter diente und heute Villa El Chocón heißt. Im Ort leben 957 Einwohner (Stand 2001).
    - [en] El Chocón Dam

    [es] Represa El Chocón

    La Represa El Chocón es una central hidroeléctrica argentina, ubicada sobre el río Limay, en las provincias de Neuquén y Río Negro, en la Patagonia argentina. Forma parte de un complejo hidroeléctrico que cuenta con una capacidad instalada de1,260 megawatts (1,690,000 HP) y que comprende también la central del Embalse de Arroyito, dique compensador de El Chocón, emplazado sobre el mismo río, 25 km aguas abajo. El conjunto representa una capacidad de generación media mensual de 236 GWh, lo que equivale aproximadamente al 7% de la generación total de energía hidroeléctrica del país,[1] que a su vez genera el 29% de la electricidad nacional.[2]

    [fr] Barrage d'El Chocón

    El Chocón est une grande centrale hydroélectrique d'Argentine, la plus grande de Patagonie. Elle est située sur le Río Limay, branche mère du fleuve Río Negro, à la frontière entre les provinces de Neuquén et de Río Negro. La ville provisoire, construite dans les années 1970 pour les travaux d'édification, s'est transformée depuis en la cité de Villa El Chocón, du côté de la province de Neuquén.

    [ru] Эль-Чокон

    Эль-Чоко́н (исп. El Chocón) — гидроэлектростанция и созданное ей водохранилище на реке Лимай в Аргентине. Построена в 1973—1975 гг у населённого пункта Вилья-Эль-Чокон в департаменте Конфлуэнсия провинции Неукен, примерно в 80 км на юго-восток от слияния Лимай с рекой Неукен и столицы провинции.



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