Southland Region - Geography

Geography

Politically, Southland proper extends from Fiordland in the west past the Mataura River to the Catlins the east. To the north, Southland is framed by the Darran and Eyre Mountains. Farther south lies Stewart Island which is separated from the mainland by the Foveaux Strait.

Southland contains New Zealand's highest waterfall—the Browne Falls. Lake Hauroko is the deepest lake in the country. The highest peak in Southland is Mount Tutoko, which is part of the Darran mountains. The largest lake in Southland is Lake Te Anau followed by Lake Manapouri which both lie within the boundaries of Fiordland National Park. Established on 20 February 1905, it is the largest national park in New Zealand—covering much of Fiordland which is devoid of human settlement.

Fiordland's terrain is dominated by mountains, fjords and glacial lakes carved up by glaciations during the last ice age, between 75,000 to 15,000 years ago. The region's coast is dotted by several fjords and other sea inlets which stretch from Milford Sound in the north to Preservation Inlet to the south. Farther north and east of Fiordland lie the Darran and Eyre Mountains which are part of the block of schist that extends into neighboring Central Otago.

Farther east of the Waiau River, the Southland Plains predominate which include some of New Zealand's most fertile farmlands. The region's two principal settlements Invercargill and Gore are located on the plains. The Plains extend from the Waiau River in the west to the Mataura River to the east. It can be divided into three broad areas: the Southland plain proper, the Waimea Plains and the lower Waiau plain to the west near the Waiau river. Off the coast of Southland lies the Great South Basin which stretches over 500,000 km2 (covering an area 1.5 times New Zealand’s land mass). It is one of the country's largest undeveloped offshore petroleum basins with prospects for both oil and gas.