The Mangaone River is a river of the

Hawke's Bay region Hawke's Bay () is a region on the east coast of New Zealand's North Island. The region is named for Hawke Bay, which was named in honour of Edward Hawke. The region's main centres are the cities of Napier and Hastings, while the more rural ...

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

North Island The North Island ( , 'the fish of Māui', historically New Ulster) is one of the two main islands of New Zealand, islands of New Zealand, separated from the larger but less populous South Island by Cook Strait. With an area of , it is the List ...

. Its source is numerous streams draining the slopes of the Te Waka Range in the Rukumoana Forest area. The river flows southeast then south through rugged hill country until it meets the

Tutaekuri River The Tutaekuri River () flows eastward for 99.9 kilometres through the Hawke's Bay Region of the eastern North Island of New Zealand into the Pacific Ocean. It starts in the Kaweka Range roughly 50 kilometres north-east of Taihape, and reaches t ...

. For most of its course it is deeply

incised Incision may refer to: * Cutting, the separation of an object, into two or more portions, through the application of an acutely directed force * A type of open wound caused by a clean, sharp-edged object such as a knife, razor, or glass splinter * ...

in the

tephra Tephra is fragmental material produced by a Volcano, volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, ...

ignimbrite Ignimbrite is a type of volcanic rock, consisting of hardened tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly from a volcano, driven by being denser than the surrou ...

and

lapilli Lapilli (: lapillus) is a size classification of tephra, which is material that falls out of the air during a volcanic eruption or during some meteorite impacts. ''Lapilli'' is Latin for "little stones". By definition lapilli range from in dia ...

volcanic rocks, which are a bit over 30,000 years old. The deep valleys are partly due to the soft rocks and partly to the rapid rise of the Mohaka Fault, at over a year. Totara was being felled along the river in the 1860s. The river suffers from pollution by nitrogen and phosphorus. After

Cyclone Gabrielle Severe Tropical Cyclone Gabrielle was a powerful and destructive tropical cyclone that devastated parts of the North Island of New Zealand and affected parts of Vanuatu and Norfolk Island in February 2023. It is the costliest tropical cyclone ...

in February 2023, Rissington bridge was replaced by a long

Bailey bridge A Bailey bridge is a type of portable, Prefabrication, pre-fabricated, Truss Bridge, truss bridge. It was developed in 1940–1941 by the British Empire in World War II, British for military use during the World War II, Second World War and saw ...

on 31 March 2023 and

Dartmoor Dartmoor is an upland area in southern Devon, South West England. The moorland and surrounding land has been protected by National Park status since 1951. Dartmoor National Park covers . The granite that forms the uplands dates from the Carb ...

bridge on 5 April 2023. They are the only bridges over the river.

References

Rivers of Hawke's Bay Rivers of New Zealand {{HawkesBay-river-stub

See also

References