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Mangapapa River (Bay of Plenty)

Bay of Plenty Region geography stubsNew Zealand river stubsRivers of New ZealandRivers of the Bay of Plenty Region
Mangapapa River 70
Mangapapa River 70

The Mangapapa River is a river of the Bay of Plenty Region of New Zealand's North Island. It rises on the north slopes of the Mamaku Plateau at the southern end of the Kaimai Range and meets the Opuiaki River at the head of Lake McLaren, which discharges to the Wairoa River a short distance downstream from the lake at the confluence with the Mangakarengorengo River. The river has been modified as part of the Kaimai hydro power scheme. The 15.6 MW Lloyd Mandeno Power Station is on the left bank of the river and discharges water diverted from other nearby streams. About 4 kilometres (2.5 mi) below this is a concrete arch dam with the 6.25 MW Lower Mangapapa Power Station.

Excerpt from the Wikipedia article Mangapapa River (Bay of Plenty) (License: CC BY-SA 3.0, Authors, Images).

Mangapapa River (Bay of Plenty)
Lakeside Walkway,

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N -37.8204 ° E 176.0396 °
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Lakeside Walkway

Lakeside Walkway

Bay of Plenty, New Zealand
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Mangapapa River 70
Mangapapa River 70
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Opuiaki River

The Opuiaki River is a river of the Bay of Plenty Region of New Zealand's North Island. It flows north from the Mamaku Plateau into Lake McLaren, to reach the Wairoa River 15 kilometres (9 mi) southwest of Tauranga.The river contributes to the Kaimai hydro power scheme built in the 1980s. A dam was built uphill from where the Ngatuhoa Lodge is now. From the dam a tunnel was dug, which channels the water into the Ngatuhoa Stream, where it enters just above another dam built there. Provisions are made to maintain some flow in both streams. Digging the tunnel was a challenging operation due to the geology of the area, formed by volcanic activity from various volcanoes, with clay and other sediment in between. Artesian waters also flow between the layers of rock and contribute to the flow of the streams in the area. Te Rere I Oturu Falls are on the Opuiaki River, with the coordinates of 37° 55' 34.89" S 175° 59' 55.38" E. The name is based on a legend about a member of the Ngāti Ranginui tribe. His name was Oturu and while being pursued by members of his tribe, he jumped from the falls. The falls are about 25 metres (82 ft) wide and 40 metres (130 ft) high. The Opuiaki river is mainly rain-fed and the flow can change rapidly during and immediately after a downpour. The falls can be reached via hiking tracks starting at the Ngatuhoa Lodge. A gravel forestry road runs past at some distance, from where a hiking track leads to the falls. The river runs through, and is part of, the Opuiaki Ecological Area, created for the protection of native flora and fauna. The Department of Conservation (DOC) carries out pest control and breeding programs, including for the kōkako, an endangered native bird species.