Opening date 1979 Height (thalweg) 26 m (85 ft) Opened 1979 Province Río Negro Province | Status Operational Normal elevation 315 m (1,033 ft) Surface area 38.6 km² | |
Similar Piedra del Águila Dam, El Chocón Dam, Alicurá Dam, Los Caracoles Dam, Embalse de Casa de Piedra |
The Arroyito Dam (in Spanish, Embalse de Arroyito) is the fifth of five dams on the Limay River in northwestern Argentine Patagonia (the Comahue region), at 315 metres (1,033 ft) above mean sea level. It was inaugurated in 1979.
Map of Arroyito Dam, R%C3%ADo Negro, Argentina
The dam is made of compacted loose materials. It has a volume of 4 million cubic metres (140×10^6 cu ft), measuring 37 metres (121 ft) in height and 3,500 metres (11,500 ft) in length. It is used primarily for the generation of hydroelectricity, with an installed power of 1,278 megawatts (1,714,000 hp). It generates on average 560 gigawatt-hours (2,000 TJ) per year. It also serves as a check dam for El Chocón, located upstream.
The reservoir has an area of 38.6 square kilometres (14.9 sq mi) and a volume of 300 million cubic metres (11×10^9 cu ft). Its depth is 7.7 metres (25 ft) on average (maximum: 15 metres (49 ft)).