The Clutha River is the second longest river in New Zealand and the longest in the South Island. It flows south-southeast 338 kilometres (210 mi) through Central and South Otago from Lake Wānaka in the Southern Alps to the Pacific Ocean, 75 kilometres (47 mi) south west of Dunedin. It is the highest volume river in New Zealand, and the swiftest, with a catchment of 21,000 square kilometres (8,100 sq mi), discharging a mean flow of 614 cubic metres per second (21,700 cu ft/s). The river is known for its scenery, gold-rush history, and swift turquoise waters. A river conservation group, the Clutha Mata-Au River Parkway Group, is working to establish a regional river parkway, with a trail, along the entire river corridor.
The Okuru River is located on the West Coast of the South Island of New Zealand. It flows northwest for 45 kilometres from its headwaters in the Southern Alps to the west of the Haast Pass to the Tasman Sea at the northern end of Jackson Bay, 12 kilometres south of Haast.
The Waimakariri River is one of the largest rivers in Canterbury, on the eastern coast of New Zealand's South Island. It flows for 151 kilometres (94 mi) in a generally southeastward direction from the Southern Alps across the Canterbury Plains to the Pacific Ocean.
The Wairau River is one of the longest rivers in New Zealand's South Island. It flows for 170 kilometres (110 mi) from the Spenser Mountains, firstly in a northwards direction and then northeast down a long, straight valley in inland Marlborough.
Bay View, previously known as Kai-arero and Petane, is a settlement in the Hawke's Bay region of the eastern North Island of New Zealand. It lies on State Highway 2, nine kilometres north of the city centre of Napier. The Esk River flows into the sea just to the north. Hawke's Bay Airport and the Napier suburb of Westshore lie just to the south. Bay View has been administered by the Napier City Council since the 1989 local government reforms.
The Peripheral Canal was a series of proposals starting in the 1940s to divert water from California's Sacramento River, around the periphery of the San Joaquin-Sacramento River Delta, to uses farther south. The canal would have attempted to resolve a problem with the quality of water pumped south. Pumps create such a powerful suction that the boundary between freshwater to saltwater has shifted inland, negatively affecting the environment. The pumps have increased by 5 to 7 million acre-feet the amount of water exported each year to the Central Valley and Southern California. However, the peripheral canal as proposed would have reduced the overall freshwater flow into the Delta and move the freshwater-saltwater interface further inland, causing damage to Delta agriculture and ecosystems.
The Cascade River is a river of the South Island of New Zealand. It flows north for 30 kilometres (19 mi) from its source in Mount Aspiring National Park in the Southern Alps, forming a deep valley between the Olivine Range and Red Hills Range. From the end of this valley it turns west to cross a low-lying swampy floodplain before entering the Tasman Sea close to Cascade Point, a headland halfway between Big Bay and Jackson Bay.
Te Awa o Mokotūāraro, formerly known as the Clive River, is a river in Hawke's Bay, New Zealand. At 33 kilometres (21 mi) long, it is the shortest of the main rivers flowing through the Heretaunga Plains.
The Gorge River is a river on the West Coast of New Zealand. It arises in the Hope Blue River Range and flows south-west into the Tasman Sea. Its tributaries include the Duncan River and Jerry River. It passes through Cascade Forest. Its mouth is about 15 km north-east of Awarua Point. The Gorge Islands are very small islands near the mouth. At its mouth, it is a fast tidal river.
The Jackson River is a river of the southwestern South Island of New Zealand. It flows predominantly northeast, flowing into the Arawhata River close to the latter's outflow into Jackson Bay.
The Mahitahi River is a river of the southwest of New Zealand's South Island. It flows northwest from the Hooker Range, part of the Southern Alps, reaching the Tasman Sea at Bruce Bay.
The Manakaiaua River is a river of the West Coast Region of New Zealand's South Island. It flows generally northwest from its source on the slopes of Mount Ritchie in the Bare Rocky Range, part of the Southern Alps, reaching the Tasman Sea to the north of Bruce Bay.
The Morse River is a river of the West Coast Region of New Zealand's South Island. It flows generally northwest from its source in the Strachan Range, reaching the Mahitahi River 14 kilometres south of Bruce Bay.
The Ohinemaka River is a river of the West Coast Region of New Zealand's South Island. It flows northwest from the slopes of Mount Reynolds, at the western end of the Strachan Range, reaching the Tasman Sea to the southwest of Bruce Bay.
The Ōtoko River is a river of the West Coast Region of New Zealand's South Island. It flows generally northwest from the northern slopes of Mount Hooker, reaching the Paringa River 20 kilometres south of Bruce Bay.
The Paringa River is a river of the West Coast Region of New Zealand's South Island. It flows generally northwest from its origins in the Southern Alps west of Mount McCullaugh, reaching the Tasman Sea 10 km (6.2 mi) southwest of Bruce Bay. Geologist Jeremy Kilner wrote his 2005 bachelor's with honours thesis at the University of Otago about this valley; the title of his thesis was: Geophysical survey of the Paringa River valley, South Westland.
The Ruera River is a river of the West Coast Region of New Zealand's South Island. It flows south from the Navigator Range in the Southern Alps, reaching the Copland River 30 kilometres east of Bruce Bay. The river's entire length is within Westland Tai Poutini National Park.
The Smoothwater River is a river of the West Coast Region of New Zealand's South Island. It flows north to reach the Tasman Sea three kilometres west of the western end of Jackson Bay.
The Stafford River is a river of the West Coast Region of New Zealand's South Island. It flows north, reaching the Tasman Sea 10 kilometres west of the western end of Jackson Bay.
The Hope River is a river in the southern part of the West Coast region of New Zealand, being the southernmost of three rivers named Hope in the South Island. It flows west for 15 kilometres, reaching the Tasman Sea 25 kilometres north of Big Bay.
