Ben Ohau range just outside Twizel. The McKenzie canal system in the central South Island was built in the 1970s and 1980s for the product of the hydro-electricity generation system, its also the perfect environment to grow colossal trout and salmon. Lakes Tekapo, Ohau, Pukaki and Ruataniwha are all connected by 58km of canals . The main purpose of the canals is to provide a regulated flow of water to the turbines in the hydro power stations

The McKenzie canal system in the central South Island was built in the 1970s and 1980s for the product of the hydro-electricity generation system, its also the perfect environment to grow colossal trout and salmon. Lakes Tekapo, Ohau, Pukaki and Ruataniwha are all connected by 58km of canals . The main purpose of the canals is to provide a regulated flow of water to the turbines in the hydro power stations