List of hydroelectric power station failures

Columns: Plant | Location | Country | Description | Year
Machchhu Dam | Machchhu | India | The Machhu Dam-II collapsed , leading to the deluge of the city of Morbi and the surrounding rural areas . 1800-25,000 people were killed | 1979 | Lawn Lake Dam | Colorado | United States | Failed in fair weather due to a combination of poor construction , age , and neglect . Caused downstream failure of the Cascade Dam . Destroyed historical Stanley hydro power station and a fish hatchery . Flooded a campground and the town of Estes Park impacting 75% of business activity . $ 31 million in damages and three lives lost . Three similar dams in the region were subsequently demolished | 1982 | Dartmouth Dam | Victoria | Australia | The 180MW Francis turbine-generator running at full speed was instantaneously stopped by a foreign body left in the penstock following maintenance . [ 7 ] The installation shifted about 2m within the base of the 180m high earth and rock fill gravity dam wall of the 3,906GL reservoir . After initial consternation regarding the integrity of the wall ( declared safe after lengthy assessment ) , the hydro installation was repaired/replaced but was off-line for several years . A breach of the wall would have obliterated only a couple of small towns and a sparsely settled agricultural area in the relatively narrow 120 km Mitta Mitta valley below the dam , but more significantly , would have resulted in the over-topping and probable failure of the earthen walls of the 40m high 3,038GL Lake Hume , 200 km downstream on the Murray River . This is immediately upstream of the regional cities of Albury and Wodonga and a much more intensively settled irrigation area , and consequences would have been disastrous | 1990 | Srisailam Dam | Andhra Pradesh | India | Due to poor reservoir operation , flood water overflowed into the semi underground power house ( 770 MW ) from the point where a protection wall was to be constructed before power house commissioning in 1987 . Flood water deluge caused the complete submergence of power house , massive debris accumulation , electrical equipment replacement and loss of power generation for a year | 1998 | Bieudron Hydroelectric Power Station | Valais | Switzerland | 1269 MW loss , penstock rupture , three fatalities , flooding and loss of generating capacity | 2000 | Taum Sauk Hydroelectric Power Station | Missouri | United States | Due to its being designed without a spillway and continuing to operate when management knew the gauging system was faulty , the upper reservoir was overtopped when water continued to be pumped from the lower reservoir after the upper was already full . A large section of the upper reservoir failed , draining over a billion gallons of water ( 4 million m³ ) in less than half an hour . There were no fatalities , but five people were injured . The failure resulted in permanent damage to the surrounding landscape and power generation did not resume until 2010 | 2005 | Itaipu Dam | Paraná ( BR ) Alto Paraná ( PY ) | Brazil Paraguay | 18 GW power generation loss due to storm damage of transmission lines | 2009

Example questions:
Which dam is located at the hydroelectric power station plant in the 10th most populous state in India ? | In what year did the two Deutschland hydroelectric power stations fail ? | Which is the only Indian state with multiple hydroelectric power station failures due to floods ? | What nation has the most hydroelectric power station failures since the year 2000 ?

Answers:
Srisailam Dam | 1943 | Uttarakhand | India