The Mokihinui Hydro was a proposed hydroelectric dam and power station planned for conservation land on the Mōkihinui River on the West Coast of New Zealand.

The dam was proposed to be 85 metres (279 ft) high and the resulting 14 kilometres (8.7 mi) long lake would have covered 330 hectares (3.3 km2) of native forest.

Forest and Bird opposed the dam and accused Meridian of not making public a report from Landcare Research that advised that the hydro scheme would cause significant adverse environmental effects.

A local trust planned and built a 85 km walking and mountain biking track, called the Old Ghost Road, pushed through to Lyell, following a historic gold miners' route.

In April 2010, the Department of Conservation stated that it had lodged an appeal with the Environment Court of the decision to grant the resource consents to Meridian Energy.