Lake Coleridge

Lake Coleridge
Whakamatau (Māori)
Lake Coleridge, looking northwest from the southern end
Lake Coleridge Location within South Island
Interactive map of Lake Coleridge
Location	Selwyn District, Canterbury region, South Island
Coordinates	43°17′S 171°30′E
Primary inflows	Harper, Wilberforce, Acheron
Primary outflows	Rakaia River (via Coleridge Power Station)
Basin countries	New Zealand
Max. length	11 km (6.8 mi)
Max. width	4.8 km (3.0 mi)
Surface area	47 km2 (18 sq mi)
Max. depth	200 m (660 ft)

Lake Coleridge (Māori: Whakamatau) is in inland Canterbury, New Zealand's South Island. It is located 35 kilometres (22 mi) northwest of Methven and has a surface area of 47 square kilometres (18 sq mi). The lake is situated in an over-deepened valley formed by a glacier over 20,000 years ago in the Pleistocene era. It currently has no natural outflows. There is a small settlement at the lake.