Mangatainoka River
Its headwaters are on the eastern side of the Tararua Range to the southwest of the town of Eketahuna , and it roughly parallels the Wairarapa Line railway and State Highway 2 through the Tararua District before meeting the Tiraumea River just before its confluence with the Manawatu River just south of Woodville . 
<triplet> Eketahuna <subj> Tararua District <obj> located in the administrative territorial entity <triplet> Tiraumea River <subj> Manawatu River <obj> mouth of the watercourse <triplet> Manawatu River <subj> Tiraumea River <obj> tributary <triplet> Woodville <subj> Tararua District <obj> located in the administrative territorial entity