The Mangles River is in the

South Island The South Island, also officially named , is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman ...

of New Zealand. Its main tributary is the

Tutaki River The Tutaki River is a river of the Tasman Region of New Zealand's South Island. It flows north from its sources southwest of Lake Rotoroa to reach the Mangles River The Mangles River is in the South Island of New Zealand. Its main tributary is ...

but it is also fed by water flowing off the

Braeburn Range The Braeburn Range is a mountain range in the Tasman Region of New Zealand's South Island. It lies to the west of Lake Rotoroa and much of the eastern flank of the range is within the Nelson Lakes National Park. The range runs south-southeast, w ...

. It feeds into the

Buller River The Buller River ( mi, Kawatiri) is a river in the South Island of New Zealand. One of the country's longest rivers, it flows for from Lake Rotoiti through the Buller Gorge and into the Tasman Sea near the town of Westport. Within the Bulle ...

near the town of Murchison. The river is popular destination for

kayaking Kayaking is the use of a kayak for moving over water. It is distinguished from canoeing by the sitting position of the paddler and the number of blades on the paddle. A kayak is a low-to-the-water, canoe-like boat in which the paddler sits fac ...

and

trout fishing Trout are species of freshwater fish belonging to the genera ''Oncorhynchus'', '' Salmo'' and '' Salvelinus'', all of the subfamily Salmoninae of the family Salmonidae. The word ''trout'' is also used as part of the name of some non-sal ...

. William Fox was the New Zealand Company agent in Nelson when he explored the Buller as far south as Murchison in February 1846, with Thomas Brunner and Charles Heaphy. They renamed the lower section of the Tiraumea River, after the English MP, Ross Donnelly Mangles, one of the company's directors. The

official name A legal name is the name that identifies a person for legal, administrative and other official purposes. A person's legal birth name generally is the name of the person that was given for the purpose of registration of the birth and which then ap ...

was gazetted as Mangles River on 27 May 2021. River pollution has been monitored since 2016. About 75% of the catchment is in native forest, so that water quality is generally good, the only exception being

nitrates Nitrate is a polyatomic ion with the chemical formula . Salts containing this ion are called nitrates. Nitrates are common components of fertilizers and explosives. Almost all inorganic nitrates are soluble in water. An example of an insoluble ...

. The river is bridged by SH6 near its confluence with the Buller.

References

Rivers of the Tasman District Rivers of New Zealand {{Tasman-river-stub