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Lake Onslow

Central Otago District, New Zealand

Lake Onslow is a man-made lake east of Roxburgh and south of Alexandra in the Otago region of New Zealand. It lies 700 m (2, 300 ft) above sea level. It was formed in 1890 by the damming of the Teviot River and Dismal Swamp, with a new dam built in 1982 that raised the lake level by 5 m (16 ft). It has been considered as the site for a pumped-storage hydroelectricity project.

Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

Other reservoirs in New Zealand