Ohaki Wetland is located on the opposite side of the Waikato River from Ohaki geothermal power station, south of Reporoa. The site was developed from a small degraded wetland to a constructed 36 hectare wetland by Contact Energy and Fish and Game in 2010. The wetland is now owned by the Ngati Tahu-Ngati Whaoa Runanga Trust and co-managed with Fish and Game under a conservation covenant. There is a walking track and bird viewing hide onsite for the public to enjoy. Access to the site is from Broadlands Road.
One maimai at Ohaki wetland is also allocated to Ngati Tahu-Ngati Whaoa Runanga Trust for annual gamebird hunting. The Runanga runs a 3 yearly allocation process for balloting of this stand for iwi members. The availability of the maimai is advertised when this process occurs.
Ngati Tahu-Ngati Whaoa iwi own over 4,500 hectares of land adjacent to the Waikato River between Te Waiheke o Huka and Pohaturoa. Land use across these Trust blocks include: dairying, dry stock, cropping, forestry and geothermal energy generation. These blocks are administered by: