Mangapapa River (Bay of Plenty) Mangapapa River (Bay of Plenty) The Mangapapa River is a river of the Bay of Plenty Region of New Zealand's North Island. It rises on the north slopes of the Mamaku Plateau at the southern end of the Kaimai Range and meets the Opuiaki River at the head of Lake McLaren, which discharges to the Wairoa River a short distance downstream from the lake at the confluence with the Mangakarengorengo River. The river has been modified as part of the Kaimai hydro power scheme. The 15.6 MW Lloyd Mandeno Power Station is on the left bank of the river and
Bay of Plenty Public Health. The Bay of Plenty region covers 12,200 km² of land and 9,500 km² of coastal marine area. It extends along the eastern coast of the North Island, from the base of the Coromandel Peninsula in the west to Cape Runaway in the east. The region extends 12 nautical miles from the mainland coastline, and also extends from the coastlines of several islands in the bay, notably Mayor Island/Tuhua, Motiti Island, Whale Island and the active volcano of Whakaari/White Island. It extends inland to the sparsely populated forest lands around Rotorua and Murupara. The geographical bay is defined by