Mangapapa River (Bay of Plenty) discharges water diverted from other nearby streams. About below this is a concrete arch dam with the 6.25 MW Lower Mangapapa Power Station. 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
Bay of Plenty is emerging as a major regional source of electricity. Tourism is the other notable industry, accounting for 15% of the region's GDP from March 2000 to 2004. Overall economic growth in the Bay of Plenty averaged 2.1% between March 2000 and 2004, compared with the national rate of 3.5%, although per capita real GDP growth in the five years to March 2003 matched the national growth rate at an averaged 2.3%. In the 2006 Census, the median annual income was $22,600, below the national median of $24,400. Further, 45.4% of people aged 15 years or older earned an annual income