Lake Hauroko is located in a mountain valley in Fiordland National Park in the South Island of New Zealand.

The long S-shaped lake is 30 kilometres in length and covers an area of 63 km². The surface is at an altitude of 150 metres (490 ft) above sea level, and the lake is 462 metres (1,516 ft) deep. It is New Zealand's deepest lake. 

One of the country's southernmost lakes, it is 35 kilometres northwest of Tuatapere, between the similarly-sized lakes Monowai and Poteriteri.

It drains about 1,800 cu ft (51 m3)/sec via the 20 km (12 mi)-long Wairaurahiri River into Foveaux Strait 10 kilometres to the west of Te Waewae Bay. The name Hauroko is of Māori origin and translates into English as "sounding wind".

According to en.wikipedia