Doubtful Sound - Hydroelectricity

Hydroelectricity

Deep Cove (45°27′S 167°09′E / 45.45°S 167.15°E / -45.45; 167.15), an arm of Doubtful Sound, is the site of discharge of water from the Manapouri Power Station's tailrace tunnels. Deep Cove, like the rest of Fiordland is a unique and mostly pristine environment. The discharge of clear fresh water has had an impact on fauna and flora by letting light into the lower layers of the sound. Nevertheless, this is an area naturally high in fresh water inflows (7.6 metres of rain falls annually).