Waiapu River

Waiapu River
Aerial view of the Waiapu River and Ruatoria in 1958
Route of the Waiapu River
Mouth of the Waiapu River
Waiapu River (North Island)
Location
CountryNew Zealand
IslandNorth Island
DistrictGisborne
WardWaiapu Ward
Physical characteristics
SourceConfluence of the Tapuaeroa River and Mata River
 • locationRaukūmara Range
 • coordinates37°53′17″S 178°16′52″E / 37.88813°S 178.28107°E / -37.88813; 178.28107
MouthPacific Ocean
 • coordinates
37°46′39″S 178°29′09″E / 37.7776°S 178.4857°E / -37.7776; 178.4857
Length130 km (81 mi)
Basin features
ProgressionWaiapu River → Pacific Ocean
Tributaries 
 • leftWhakatū Stream, Mangakōpikopiko Stream, Mangaoparo River, Paoaruku Stream, Mangaiwi Stream, Mangarara Stream, Pukerimu Stream, Karata Stream, Makoao Stream, Poroporo River, Motumako Stream, Maraehara River
 • rightMangakinonui Stream, Mangahārei Stream, Kōpuaroa Stream, Mangaonui Stream, Mangatakawa Stream, Wairoa River, Mākirikiri Stream, Mangawhero Stream

The Waiapu River is a river in the Gisborne District of the North Island of New Zealand, with a total length of approximately 130 kilometres (81 mi). Found in the north-east of the Waiapu Valley, it flows north-east from the joining of the Mata River and the Tapuaeroa River (both of which flow from the Raukumara Ranges), then passes by Ruatoria before reaching the Pacific Ocean at Rangitukia. Other tributaries of the Waiapu River include the Mangaoporo, Poroporo, Wairoa, Maraehara rivers, and the Paoaruku stream. It is the most well-known river in the region and lies within the rohe (territory) of Ngāti Porou, the largest iwi (extended kinship group or tribe) on the East Coast, and second largest in New Zealand. The area was the site of hostilities during the New Zealand Wars from June to October in 1865, both between Pākehā (New Zealand Europeans) and Māori, and between factions of Ngāti Porou.

The New Zealand Ministry for Culture and Heritage gives a translation of "swallowing river" for Waiapu.