Information:  - The North Island or Te Ika-a-Mui ("Mori") is one of the two main islands of New Zealand, separated from the slightly larger but much less populous South Island by Cook Strait. The island's area is , making it the world's 14th-largest island. It has a population of   - The Tasman Sea (Mori: "Te Tai-o-Rehua") is a marginal sea of the South Pacific Ocean, situated between Australia and New Zealand. It measures about across and about from north to south. The sea was named after the Dutch explorer Abel Janszoon Tasman, who was the first recorded European to encounter New Zealand and Tasmania. The British explorer Captain James Cook later extensively navigated the Tasman Sea in the 1770s as part of his first voyage of exploration.  - Lake Christabel is a small lake in the north of New Zealand's South Island. It is located 12 kilometres southwest of the Lewis Pass. The lake is the source of the Grey River, one of the longest rivers on the South Island's West Coast, although its outlet is underground. The lake lies behind a landslide dam, thought to have been created by a prehistoric earthquake.  - Cook Strait lies between the North and South Islands of New Zealand. It connects the Tasman Sea on the northwest with the South Pacific Ocean on the southeast, and runs next to the capital city, Wellington. It is wide at its narrowest point, and is considered one of the most dangerous and unpredictable waters in the world.  - The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south and is bounded by Asia and Australia in the west and the Americas in the east.  - Lake Brunner is the largest lake in the northwestern South Island of New Zealand , covering an area of 40 km² . The lake 's outflow is the Arnold River , a tributary of the Grey River . The lake lies 31 kilometres to the southeast of Greymouth . The main settlement close to the lake is Moana , on the northern shore . Located several kilometres inland from the coast road ( State Highway 6 ) , it is less frequently visited by tourists than many of the West Coast 's scenic highlights , but it is becoming increasingly popular , in part due to its reputation for fishing . Lake Brunner was named by John Rochfort for the 19th century explorer Thomas Brunner . The Mori name for the lake , Kotuku moana , means `` Sea of herons '' . The New Zealand freshwater mussel ( Hyridella menziesi ) is found in the lake . By 1976 twenty percent of the catchment of the lake was farmed and there was a population of 84 at the settlement of Moana .  - In geography, temperate or tepid latitudes of Earth lie between the tropics and the polar regions. The temperatures in these regions are generally relatively moderate, rather than extremely hot or cold, and the changes between summer and winter are also usually moderate.  - The Grey River / Mwheranui is located in the northwest of the South Island of New Zealand. It rises in Lake Christabel, one of numerous small lakes on the western side of the Southern Alps,12 kilometres southwest of the Lewis Pass, and runs westward for 120 kilometres before draining into the Tasman Sea at Greymouth. The river was named by explorer Thomas Brunner in honour of New Zealand politician Sir George Grey. The official name of the river was changed to Grey River / Mwheranui in 1998 by way of the Ngai Tahu Claims Settlement Act 1998. The Maori name for the river system and surrounding area is Mwhera, with Mwheranui being distinguished from the northern branch Little Grey River / Mwheraiti.  - Climate is the statistics of weather, usually over a 30-year interval. It is measured by assessing the patterns of variation in temperature, humidity, atmospheric pressure, wind, precipitation, atmospheric particle count and other meteorological variables in a given region over long periods of time. Climate differs from weather, in that weather only describes the short-term conditions of these variables in a given region.  - Greymouth is the largest town in the West Coast region in the South Island of New Zealand, and the seat of the Grey District Council. The population of the whole Grey District is , which accounts for % of the West Coast's inhabitants. The Greymouth urban area had an estimated population of The District Council expects growth of 1.5% per year between 2006 and 2016.  - Lewis Pass (el. 864 m.) is a mountain pass in the South Island of New Zealand.  - The South Island or Te Waipounamu ("Mori") is the larger of the two major islands of New Zealand, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, and to the south and east by the Pacific Ocean. The South Island covers and is influenced by a temperate climate.  - New Zealand is an island nation in the southwestern Pacific Ocean. The country geographically comprises two main landmassesthat of the North Island, or Te Ika-a-Mui, and the South Island, or Te Waipounamuand numerous smaller islands. New Zealand is situated some east of Australia across the Tasman Sea and roughly south of the Pacific island areas of New Caledonia, Fiji, and Tonga. Because of its remoteness, it was one of the last lands to be settled by humans. During its long period of isolation, New Zealand developed a distinct biodiversity of animal, fungal and plant life. The country's varied topography and its sharp mountain peaks, such as the Southern Alps, owe much to the tectonic uplift of land and volcanic eruptions. New Zealand's capital city is Wellington, while its most populous city is Auckland.  - Thomas Brunner (April 1821  22 April 1874) was an English-born surveyor and explorer remembered for his exploration of the West Coast of New Zealand's South Island.  - Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus "Rattus", the most important of which to humans are the black rat, "Rattus rattus", and the brown rat, "Rattus norvegicus". Many members of other rodent genera and families are also referred to as rats, and share many characteristics with true rats.    What is the relationship between 'lake brunner' and 'west coast region'?
A:
located in the administrative territorial entity