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
Crooked River (New Zealand) Crooked River (New Zealand) Crooked River is a river that flows from headwaters in the Southern Alps to Lake Brunner in the West Coast region of New Zealand's South Island. It is named for the erratic path it takes. Near Lake Brunner, it passes through reasonably flat farmland, but closer to its source, it rushes through gorges and rapids. One tributary is the Poerua River from Lake Poerua. Fishers visit Crooked River to catch trout. The river is also used by canoeists. Recently, there has been a minor silt build-up in the river's middle reaches. There are two backcountry huts