Pomahaka River

The Pomahaka River is in

South Otago South Otago lies in the south east of the South Island of New Zealand. As the name suggests, it forms the southernmost part of the geographical region of Otago. The exact definition of the area designated as South Otago is imprecise, as the area is ...

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 List of islands of New Zealand, smaller islands. It is the ...

South Island The South Island, also officially named , is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasma ...

. It is a tributary of the

Clutha River The Clutha River (, officially gazetted as Clutha River / ) is the second longest river in New Zealand and the longest in the South Island. It flows south-southeast through Central and South Otago from Lake Wānaka in the Southern Alps to the ...

, flowing south for from the Old Man Range of mountains to join the Clutha about 15 km west of Balclutha. Along its path it passes the Blue Mountains and the

forestry Forestry is the science and craft of creating, managing, planting, using, conserving and repairing forests, woodlands, and associated resources for human and environmental benefits. Forestry is practiced in plantations and natural stands. ...

town of Tapanui in the area known locally as West Otago. For a short part of its length, the river forms the boundary between

Otago Otago (, ; mi, Ōtākou ) is a region of New Zealand located in the southern half of the South Island administered by the Otago Regional Council. It has an area of approximately , making it the country's second largest local government reg ...

and Southland regions. Major

flooding A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide Tides are the rise and fall of sea levels caus ...

of the Pomahaka in 1978 led to the relocation of the town of Kelso and caused damage severe enough to lead to the closure of the

Tapanui Branch The Tapanui Branch was a railway line located near the border of the regions of Southland and Otago, New Zealand. Although the name suggests that it terminated in Tapanui, its furthest terminus was actually in Edievale. Construction of the ...

railway Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in Track (rail transport), tracks. In contrast to road transport, where the ...

. Rivers of Otago Rivers of Southland, New Zealand Rivers of New Zealand Tributaries of the Clutha River {{Southland-river-stub