Mangaturuturu River

{{Use New Zealand English|date=April 2024}}

{{Use dmy dates|date=July 2019}}

{{Infobox river

| name = Mangaturuturu River

| native_name ={{native name|mi|Mangaturuturu}}

| name_other =

| name_etymology = Māori meaning "leaky stream"

| nickname = Sulphur River

| image = Mangaturuturu viaduct on the North Island Main Trunk Line ATLIB 312152.png

| image_size = 300px

| image_caption = Railway viaduct over the Mangaturuturu River

| image_alt =

| map = {{Maplink|frame=yes|type=line|plain=yes|zoom=9|frame-align=center|frame-width=300|frame-height=300|stroke-color=#0000ff|stroke-width=2}}

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| subdivision_type1 = Country

| subdivision_name1 = New Zealand

| subdivision_type2 = Region

| subdivision_name2 = Manawatū-Whanganui

| subdivision_type3 = District

| subdivision_name3 = Ruapehu

| subdivision_type4 =

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| subdivision_type5 =

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| length = {{convert|29|km|mi}}

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| source1 = Mangaturuturu Glacier

| source1_location = Mount Ruapehu

| source1_coordinates= {{Coord|39|16|55|S|175|32|50|E|display=inline}}

| source1_elevation = {{convert|2200|m|ft}}

| mouth = Manganui o te Ao River

| mouth_location =

| mouth_coordinates = {{coord|39|19|20|S|175|16|12|E|region:NZ_type:river|display=title,inline}}

| mouth_elevation = {{convert|490|m|ft}}

| progression = Mangaturuturu River → Manganui o te Ao River → Whanganui River

| river_system = Whanganui River

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}}

The Mangaturuturu River is a river at the centre of New Zealand's North Island. One of the headwaters of the Manganui o te Ao River, it flows west from the slopes of Mount Ruapehu, joining with numerous other small rivers to become the Manganui o Te Ao {{convert|20|km|mi}} northwest of Ohakune.{{LINZ|28029|Mangaturuturu River|2010-04-21}} It has also been known as Sulphur River, or Sulphur Creek. In April 1975 a lahar raised the river to {{convert|2.1|m||abbr=on}} above its flood level.{{Cite web|last=|first=|date=|title=Mangaturuturu Viaduct|url=https://www.heritage.org.nz/the-list/details/7779|archive-url=|archive-date=|access-date=2020-12-28|website=www.heritage.org.nz}} There were also lahars in 1969 and September 1995. Earlier lahars were around 8,500 and 10,500 years ago.{{Cite journal|last1=Lecointre |first1=Jerome A.|last2=Neall |first2=Vincent E.|last3=Palmer|first3=Alan S. |date=1998|title=Quaternary lahar stratigraphy of the western Ruapehu ring plain|journal=New Zealand Journal of Geology and Geophysics|doi=10.1080/00288306.1998.9514807|doi-access=free}}