The Saltwater Lagoon is a lagoon

Lagoon

A lagoon is a body of shallow sea water or brackish water separated from the sea by some form of barrier. The EU's habitat directive defines lagoons as "expanses of shallow coastal salt water, of varying salinity or water volume, wholly or partially separated from the sea by sand banks or shingle,...

 located on the West Coast

West Coast, New Zealand

The West Coast is one of the administrative regions of New Zealand, located on the west coast of the South Island, and is one of the more remote and most sparsely populated areas of the country. It is made up of three districts: Buller, Grey and Westland...

 of New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

's South Island

South Island

The South Island is the larger of the two major islands of New Zealand, the other being the more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south and east by the Pacific Ocean...

.

It is in the southern Westland District

Westland District

Westland District is a territorial authority on the west coast of New Zealand's South Island. Its population is - Government :The Westland District is governed by an elected Council, headed by an elected Mayor. The Mayor is elected at large. The current Mayor is Maureen Pugh. Councillors are...

, with Abut Head

Abut Head

Abut Head is a forested headland on the West Coast of New Zealand's South Island. It is located north of the village of Whataroa and west of Harihari, and is southwest of the Westland District's main centre, Hokitika. On the southern side of the headland, the Whataroa River meets the Tasman Sea. To...

 to the west and the village of Harihari

Harihari

Hari Hari -Maori Meaning, from Te Aka Maori/English Dictionary is "To Take/Carry Joy" or, as local legend suggests, "Come together in Unison" from a Maori canoe paddling chant/song. In recent years, Hari Hari has been increasingly referred to as "Harihari" – Maori Meaning is "Ambulance"...

 to the east/southeast. The lagoon is located on the coast of the Tasman Sea

Tasman Sea

The Tasman Sea is the large body of water between Australia and New Zealand, approximately across. It extends 2,800 km from north to south. It is a south-western segment of the South Pacific Ocean. The sea was named after the Dutch explorer Abel Janszoon Tasman, the first recorded European...

 and has a narrow sea opening at the western end that lets in saltwater. No rivers feed into the lagoon, but the Hinatua River

Hinatua River

The Hinatua River is a small river in the Westland District of New Zealand's South Island. Its headwaters are on Mount Hercules, near State Highway 6 as it runs between Harihari and Te Taho...

passes very close to the lagoon's eastern shore.