Waiapu River

Left: Tapuaeroa River , Mangaopara River , Paoaruku stream , Poroporo River , Maraehara River
Right: Mata River , Wairoa River

Waiapu River
Country	New Zealand
District	Gisborne District
Ward	Waiapu Ward
Basin features
Main source	Raukumara Range
River mouth	Pacific Ocean
Tributaries	Left: Tapuaeroa River, Mangaopara River, Paoaruku stream, Poroporo River, Maraehara River Right: Mata River, Wairoa River
Physical characteristics
Length	130 km (81 mi)

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.