Big River, New Zealand
Big River in 1910s
Location
CountryNew Zealand
Physical characteristics
Source 
  locationCameron Mountains
  elevation1,304 m (4,278 ft)
Mouth 
  location
Foveaux Strait
  elevation
0m
Length33 km (21 mi)

The Big River has also been known by several other names, Windsor River[1] and Māori name Okopowa,[2] Patu-po,[3] or Patupō,[4] though that last name, meaning kill by night,[1] might refer to a place near Long Point and Waitutu.[5] It is a river of southern Fiordland, New Zealand, and is one of three rivers of that name in the South Island. It is the main source of Lake Hakapoua and a lower stretch is the lake's 2-kilometre (1.2 mi) outflow to the sea. The river rises on the 1,123 m (3,684 ft) high Arnett Peak,[6] in the Cameron Mountains, runs about 23 km (14 mi) to the lake.[7] At about the mid point of the river it runs through a narrow gorge.[8] Elsewhere it is generally very shallow.[9] The river is in the Fiordland National Park.[10]

The area was used by Kāti Mamoe and later by Ngāi Tahu.[1]

In 1903, when the area was first surveyed, whio, swan, kākāpō, weka and kākā were common.[11] A taihoropī (grebe) has been reported on the lake.[12] Red deer are common in the area.[13]

Geology

The river mostly flows over two rock types. Its upper reaches are mainly on undated, undifferentiated Cameron Group rocks, probably of Cambrian age. They are layers of metasedimentary and metavolcanic rocks, with quartz-rich psammite and some pelite, containing sillimanite, feldspar and migmatites.[14][15]

Medium-grained, massive to weakly foliated, Devonian, Big Pluton rocks, make up the lower part of the Lake Monk (east) arm of the river and down to the sea. Big is part of the Ridge Suite of plutons, made up of biotite, muscovite, garnet, tonalite, grandiorite, granite and monzogranite.[14][15]

At the southern end of Lake Hakapoua, cataclastic Balleny Basin, Eocene, Macnamara Formation, sedimentary rocks lie over Big Pluton rocks. They consist of a basal conglomerate and pebbly sandstone, covered by carbon-rich mud and sandstones.[16][17] It was these rocks which slipped in 1915, filling part of the river and Lake Hakapoua, which had until then been tidal.[18]

Like all Fiordland rivers, it has a U-shaped valley, cut by Quaternary glaciers up to 18,000 years ago.[14][15]

Tracks

Big River is at the end of the South Coast Track, 61 km (38 mi) from the road at Rarakau (about 28 km (17 mi)) west of Tuatapere). The track runs via Waikoau River, the former Port Craig tramway, Waitutu River and Aan River. Westies Hut, the nearest hut to Big River, is 2 km (1.2 mi) from the mouth of the river.[19] The 5-bunk hut[20] is a former fishing shelter, in an uplifted sea cave, which was restored in 2007.[21]

The South Coast Track used to be part of the telegraph line and track to Puysegur Point,[22] which was built in 1908-9,[23] but replaced by radio in 1925,[24] after many failures and repairs.[25]

Routes have also been described linking Big River from the Richard Burn,[13] or Lake Kakapo,[26] or Lakes Poteriteri and Mouat, all via Lake Monk.[27]

See also

References

  1. 1 2 3 "PLACE NAMES OF OTAGO AND SOUTHLAND Southland Times". paperspast.natlib.govt.nz. 11 April 1914. Retrieved 2 June 2023.
  2. "OVERLAND FROM PRESERVATION INLET. (Otago Daily Times, 1872-12-02)". paperspast.natlib.govt.nz. Retrieved 24 June 2018.
  3. "PLACE NAMES OF OTAGO AND SOUTHLAND (Southland Times, 1914-04-11)". paperspast.natlib.govt.nz. Retrieved 24 June 2018.
  4. "PRESERVATION INLET (Southland Times, 1914-02-04)". paperspast.natlib.govt.nz. Retrieved 24 June 2018.
  5. "Patupō". gazetteer.linz.govt.nz. Retrieved 1 June 2023.
  6. "Big River, Southland". NZ Topo Map. Retrieved 1 June 2023.
  7. "NZGB Gazetteer | linz.govt.nz". gazetteer.linz.govt.nz. Retrieved 1 June 2023.
  8. "Big River, Southland". NZ Topo Map. Retrieved 2 June 2023.
  9. G.D. & J.H. Egarr (1981). "New Zealand Recreational River Survey" (PDF). NIWA. p. 57.
  10. "Fiordland National Park Order 1978 (SR 1978/333)". www.legislation.govt.nz. Retrieved 2 June 2023.
  11. "ROUND FIORD COUNTY Otago Witness". paperspast.natlib.govt.nz. 6 May 1903. Retrieved 2 June 2023.
  12. "Hoary-headed grebe | Taihoropī". nzbirdsonline.org.nz. Retrieved 1 June 2023.
  13. 1 2 "The...Express hits Fiordland". nzetc.victoria.ac.nz. 1988. Retrieved 1 June 2023.
  14. 1 2 3 "Qmap Geology of the Fiordland area : scale 1:250,000". GNS. 2010.
  15. 1 2 3 "Geology of the Fiordland Area - GNS Science". yumpu.com. 2010. p. 10. Retrieved 23 December 2022.
  16. "Qmap Geology of the Fiordland area : scale 1:250,000". GNS. 2010.
  17. "Geology of the Fiordland Area - GNS Science". yumpu.com. 2010. p. 10. Retrieved 23 December 2022.
  18. Stanton, B. R.; Pickrill, R. A. (June 1988). "Trapped sea water in Lake Hakapoua". New Zealand Journal of Marine and Freshwater Research. 22 (2): 293–294. doi:10.1080/00288330.1988.9516301. ISSN 0028-8330.
  19. "South Coast Track". www.doc.govt.nz. Retrieved 1 June 2023.
  20. "Westies Hut". www.doc.govt.nz. Retrieved 2 June 2023.
  21. Hindmarsh, Gerard (17 April 2020). "Tribute to a true outsider". Stuff. Retrieved 1 June 2023.
  22. "A TERRIBLE EXPERIENCE Southland Times". paperspast.natlib.govt.nz. 23 September 1916. Retrieved 1 June 2023.
  23. "Public Works Statement. By The Hon. Roderick Mckenzie, Minister Of Public Works". paperspast.natlib.govt.nz. 20 December 1909. Retrieved 1 June 2023.
  24. "PUBLIC WORKS STATEMENT BY THE HON. J. G. COATES, MINISTER OF PUBLIC WORKS". paperspast.natlib.govt.nz. 1925. Retrieved 1 June 2023.
  25. "PUYSEGUR POINT Southland Times". paperspast.natlib.govt.nz. 18 February 1922. Retrieved 4 June 2023.
  26. Abbott, Mick (2 February 2016). "No. 11 - Experience Fiordland". Wilderness Magazine. Retrieved 1 June 2023.
  27. "Lake Mouat - Lake Monk, 14 - 27 January 2016 - Danilo". www.southernalpsphotography.com. Retrieved 1 June 2023.

46°6′55″S 166°57′52″E / 46.11528°S 166.96444°E / -46.11528; 166.96444


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