High Quality Content by WIKIPEDIA articles! The Wairoa River runs north into Tauranga Harbour at the western end of the Bay of Plenty in New Zealand's North island.IN the mid-1970s the Tauranga Joint Generation Committee proposed a hydroelectric power scheme for the Wairoa River. THe newly formed Kaimai Canoe Club opposed the scheme at the water rights headings. A Compromise was arrived at by allowing the release of water on a regular basis for whitewater recreation.THe last dam diverts water around the river bed to the Ruahihi Power Station. AN arrangement with whitewater users sees water released down the river bed 26 days a year. THis provides for a popular whitewater run.