Patea Dam
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The Patea Dam is a high compacted earth fill–type hydroelectric dam in New Zealand, constructed between 1979 and 1984. The Patea Hydro Electric Scheme first produced power in May 1984. After construction difficulties, wetter than normal conditions had caused a six-month delay.
The dam is 82 metres tall, the fourth highest in New Zealand. It was the first dam constructed using tertiary sandstone and siltstone as fill materials. The dam impounds Lake Rotorangi, which is the longest man-made lake in New Zealand (46km).[1] With three 10,000 kW vertical Francis turbine generator sets and a 700 kW auxiliary generator, the scheme has a total capacity of 30,700 kW and an average annual output of 118 GWh.
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