The Ohau River is a river of the Horowhenua District of New Zealand's North Island. It flows from the confluence of two short rivers, the North Ohau River and the South Ohau River. The Ohau initially flows north, turning west to the southeast of Levin. It reaches the Tasman Sea 10 kilometres to the southwest of Levin.
For the latest information on recreational suitability in this catchment visit Horizons' safe swim spot site here.