Water in New Zealand and are of varying types and origins. Many of the lakes in the central North Island area are volcanic crater lakes, while the majority of the lakes near the Southern Alps were carved by glaciers. Hydroelectric reservoirs are common in South Canterbury, Central Otago and along the Waikato River. Over 180,000 kilometres of rivers has been mapped in New Zealand, the longest being the Waikato River with a length of 425 kilometres and the largest river by volume is the Clutha River with a mean discharge of 533 cubic metres per second. New Zealand has many notable waterfalls, some of
Wapiti River (New Zealand) Wapiti River (New Zealand) The Wapiti River is a river in the Southland Region of New Zealand. It rises in the northern extremity of the Stuart Mountains in Fiordland National Park, the top of its watershed being part of the main divide. Two branches feed Lake Sutherland, (elevation ) the outflow of which flows southwest to Lake Thomson. A further reach of the river heads east to Lake Hankinson, which is separated from the North West Arm of the Middle Fiord of Lake Te Anau by a final stretch of the river. The river is named for the Wapiti (Cervus