Kaituna River
The Kaituna River is in the Bay of Plenty region of the North Island of New Zealand. It is the outflow from Lakes Rotorua and Rotoiti, and flows northwards for 45 kilometres (28 mi), emptying into the Bay of Plenty near Te Puke. It was the subject of a claim concerning the effluent flowing down the river from Lake Rotorua, which resulted in movement to a land treatment system.
The upper section of the Kaituna, also referred to as Okere River, offers some of the best whitewater kayaking and rafting in the world, with the Okere Falls area containing the highest commercially rafted waterfall, 7 metres (23 ft), in the world. It is also famous for its trout fishing.
Cultural claim
During the 1970s Lake Rotorua was becoming eutrophic under heavy nutrient loadings, leading the Ministry of Works to propose diverting some sewage flow into the Kaituna River. Local iwi objected however, and filed a claim with the Waitangi Tribunal. Their objections included the insult to other iwi (leading to loss of mana) and destruction of the rivers mauri (life force or essence) which they believed would destroy its ability to sustain aquatic life. The Ministry of Works report however stated that the mauri concept was essentially religious in nature and not scientifically verifiable, while on the other hand diluting the waste would help prevent excess pollution and keep costs at a reasonable level. In Māori culture religion and science are not treated separately as they tend to be in Western culture.
