Retaruke River
Retaruke River
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Retaruke River

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Retaruke River

The Retaruke River is a river in the North Island of New Zealand. It joins with the Whanganui River at Whakahoro just above Wade's Landing and downstream from Taumarunui. The river flows through the farming communities of Upper and then Lower Retaruke Valley. Downstream from this junction is the Mangapurua Landing with its Bridge to Nowhere, servicing the ill-fated Mangapurua Valley farming community.

The river source is located 2 km (1.2 mi) south west of National Park in the Erua Forest. The river initially flows south west through the forest before bending to flow north west.

Most of the valley is made up of Early Miocene Mahoenui Group rocks. About 65,000 years ago movement of the Waimarino Fault probably allowed capture of the Waimarino Stream and/or Makatote River by the Manganuiateao River, which would have reduced erosion by ending the incidence of lahars and reducing flows in the Retaruke River.

Coal was discovered in 1909 in the Late Miocene Whangamomona Group. During the 1960s and 1970s, an opencast coal mine operated at the top end of Retaruke Road. Between 1938 and 1984 it produced about 3,000 tons of coal.

1 kilometre up the Upper Retaruke Valley road is the location of the annual Kaitieke Collie club sheepdog trials. Next is the location of a "Victory Hall". Further up the valley there was a coal mine, and it was along the upper Retaruke river that fossil whalebones were found by Ken McNaught.[citation needed]

Portions of the Lower Retaruke Valley were settled about 1900 by government run farm ballot. Other portions were independently purchased from the Māori community. The land was then cleared, grassed, and sheep flocks herded in from Raurimu to stock the hills.

The valley previously had a tiny Mangaroa Primary School(39°7.22′S 175°8.06′E / 39.12033°S 175.13433°E / -39.12033; 175.13433). At a location further up there still remain the community hall and sports field, here there are annual children's Christmas parties, occasional Dances/Social and the annual Retaruke Easter Sports Day are run.

Access to the Valley is via three main roads: Oio Road, Kawautahi Road or the Raurimu-Kaitieke Road from Raurimu. However, on foot the valley can be accessed via the old Mangapurua Road, or by jetboat or via the Whanganui River. (Other access routes such as the Kokako Road & Kuotoroa East Road (to Ruatiti), Te Mata Road from Whakahoro to Taumarunui have long since been abandoned. Some of these roads were examples of pack horse tracks that were expanded to roads during the Great Depression 1930s as job creation schemes.)

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