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Lake Pukaki
Lake Pukaki
Lake Pukaki
Location of Lake Pukaki
Location of Lake Pukaki
Lake Pukaki
Location in South Island
Location of Lake Pukaki
Location of Lake Pukaki
Location Mackenzie District, Canterbury region, South Island
Coordinates 44°07′S 170°10′E / 44.117°S 170.167°E / -44.117; 170.167
Primary inflows Tasman River
Primary outflows Pukaki River
Catchment area 1,413 km2 (546 sq mi)
Basin countries New Zealand
Surface area 178.7 km2 (69.0 sq mi)
Average depth 47 m (154 ft)
Max. depth 70 m (230 ft)
Water volume 4.66 km3 (3,780,000 acre⋅ft)
Surface elevation 518.2 to 532 m (1,700 to 1,745 ft)
Frozen never (winter air temperatures can reach as low as −20 °C (−4 °F) though)
Islands Five Pound Note Island (now submerged)
Settlements Twizel
Lake pukaki 27
Lake Pukaki, looking towards Mount Cook, in summer

Lake Pukaki is the largest of three roughly parallel alpine lakes running north–south along the northern edge of the Mackenzie Basin on New Zealand's South Island. The others are Lakes Tekapo and Ohau. All three lakes were formed when the terminal moraines of receding glaciers blocked their respective valleys, forming moraine-dammed lakes. The Alps2Ocean mountain bike trail follows the edge of Lake Pukaki for part of its length.

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