|Basin countries||New Zealand|
|Length||48 kilometres (30 mi)|
The Mangakahia River is a river of the Northland Region of New Zealand's North Island. It flows east from its sources in the Mataraua Forest, turning southeastward after about 20 kilometres on joining with the small Awarua River. It then turns east, then south again, reaching the Wairoa River approximately halfway between Whangarei and Dargaville.
"Place Name Detail: Mangakahia River". New Zealand Geographic Placenames Database. Land Information New Zealand. Retrieved 12 July 2009.
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