Maoergai Dam

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Maoergai Dam
Maoergai Dam is located in China
Maoergai Dam
Location of Maoergai Dam in China
Country China
Location Mao County, Ngawa Prefecture, Sichuan
Coordinates 32°4′23.03″N 103°13′44.56″E / 32.0730639°N 103.2290444°E / 32.0730639; 103.2290444Coordinates: 32°4′23.03″N 103°13′44.56″E / 32.0730639°N 103.2290444°E / 32.0730639; 103.2290444
Purpose Power
Status Operational
Construction began 2006
Opening date 2011; 6 years ago (2011)
Dam and spillways
Type of dam Embankment, rock-fill
Impounds Heishui River
Height 147 m (482 ft)
Elevation at crest 2,138 m (7,014 ft)
Width (crest) 12 m (39 ft)
Total capacity 535,000,000 m3 (434,000 acre·ft)
Power station
Name Maoergai Hydropower Station
Coordinates 31°58′54.90″N 103°20′7.69″E / 31.9819167°N 103.3354694°E / 31.9819167; 103.3354694
Commission date 2011
Type Conventional
Hydraulic head 168 m (551 ft)
Turbines 3 x 140 MW Francis-type
Installed capacity 420 MW

The Maoergai Dam is a rock-filled embankment dam on the Heishui River in Mao County of Sichuan Province, China. The primary purpose of the dam is hydroelectric power production and it supports a 420 MW power station. Preliminary construction (roads, bridges and foundation) for the dam began in 2006 while construction on the dam and power station commenced in 2008. The generators were commissioned in 2011.[1] To produce power, water from the reservoir is diverted to a power station downstream through a 16.15 km (10.04 mi) long headrace tunnel and penstock. The difference in elevation between the reservoir and power station affords a hydraulic head (water drop) of 168 m (551 ft). The dam sits just below the headwaters of the Heishui and water discharged through its power station regulates the flow of water for smaller power stations downstream.[2][3]

See also[edit]


  1. ^ "Maoergai Hydropower first generating unit (毛尔盖水电站首台机组发电)" (in Chinese). Jiuzhaigou. 28 October 2011. Archived from the original on 12 May 2012. Retrieved 2 July 2014. 
  2. ^ "Scheme of water diversion system Maoergai hydropower charge" (in Chinese). Sichuan Hydropower. 2013. Retrieved 2 July 2014. 
  3. ^ "Maoergai Dam hydropower station 2138m elevation Adit II grout curtain grouting construction tenders" (in Chinese). State Bidding Corp. 8 January 2013. Retrieved 2 July 2014.