Wainui River (Bay of Plenty) river. Wainui River (Bay of Plenty) The Wainui River is a river of the Bay of Plenty Region of New Zealand's North Island. It flows north from the Kaimai Range to reach Tauranga Harbour south of Katikati. The catchment has of stream margins. 41% of the catchment remains covered in native bush, but 48% is under pasture and suffers soil erosion. The river includes 3 waterfalls of up to , which have been kayaked. The long former East Coast Main Trunk railway bridge is designated as the limit of the Coastal Marine Area. Downstream, a 3-span bridge takes SH2 over
Bay of Plenty (New Zealand electorate) each review. For the 2008 election, the eastern boundary moved far westwards to the eastern fringe of Te Puke, in the process abandoning sections of the central coast to the Rotorua and East Coast seats. Bay of Plenty was created for the change to the mixed-member proportional (MMP) representation voting system; it was carved out of parts of the old seats of Kaimai, Tarawera and Eastern Bay of Plenty. Its original incarnation was based mostly around Whakatane and Opotiki districts, with the remaining population coming from Te Puke and parts of greater Tauranga. Bay of Plenty has been a safe