Rees River

The Rees River (Māori language: Puahiri or Puahere)[1] is a headwater tributary of the Clutha River / Mata-Au that drains eastward of the main divide of the Southern Alps / Kā Tiritiri o te Moana in New Zealand. The river runs 41 km,[2] drains an area of 406 km2, and discharges into the head of Lake Wakatipu at Glenorchy. Bound by the Richardson (Whakaari) Mountains[3] to the east and the Forbes Mountains[4] to the west, its snow-covered headwaters rise above 2000 m.

Rees River
Native name
Location
CountryNew Zealand
Physical characteristics
Mouth 
 • location
Glenorchy
 • elevation
320 m
Length41 km
Basin size406 km2
Discharge 
 • average26 cumecs

The upper parts of the Rees River occupy a formerly glaciated valley that was fed by the Tyndall Glacier, which now drains into the adjacent Dart Valley. Below Rees Saddle the river valley is constrained by a series of steep alluvial fans that are fed from tributary basins.[2] The lithology of the Rees catchment is highly erodible schist of the Aspiring lithologic association.[5] The underlying schist is highly fissive due to its fine-grain, segregated quart-feldspar-mica composition.[6]

The Rees valley, covered in tussock and native forest, is a popular location for recreational fly fishing, pack rafting and tramping, including the Dart-Rees Track, a five-day loop which crosses from the upper reaches of the Rees into the valley of the Dart River / Te Awa Whakatipu.[7] However, the steep hillsides, easily erodible rock, proximity to the Alpine Fault, and intense rainfalls contribute to geohazard risks in the region. A debris flow swept away a hiker during a river crossing in an unnamed tributary in the Upper Rees Valley near Cleft Peak in January 2002.[6]

The Rees river and valley get their gazetted name[8] from the high country station, was originally part of the runs established by William Gilbert Rees, the first sheep farmer in the Wakatipu Basin.[9]  Ownership of the station has been in the Scott family since 1905; the Rees Valley Station is maintained in perpetuity as a part of Crown Pastoral Lease. 

The lower Rees Valley, which continues to operate as a beef and sheep grazing farm, was a filming location for Mission: Impossible – Fallout,[10] and the television drama series Top of the Lake.

See also

References
  1. "Puahiri / Puahere". Kā Huru Manu. Nga Rūnanga o Ngāi Tahu. Retrieved 2 February 2021.
  2. Cook, Simon J.; Quincey, Duncan J.; Brasington, James (2 January 2014). "Geomorphology of the Rees Valley, Otago, New Zealand". Journal of Maps. 10 (1): 136–150. doi:10.1080/17445647.2013.863744. ISSN 1744-5647.
  3. "Place name detail: "Whakaari"". New Zealand Gazetteer. New Zealand Geographic Board. Retrieved 25 July 2022.
  4. "Place name detail: "Forbes Mountains"". New Zealand Gazetteer. New Zealand Geographic Board. Retrieved 25 July 2022.
  5. Turnbull, I. M. (2000). Geology of the Wakatipu Area, Institute of Geological and Nuclear Sciences 1:250,000 geological map 18. 1 sheet + 72 p. Lower Hutt, New Zealand, Institute of Geological and Nuclear Limited.
  6. McSaveney, M.J., Glassey, P.J. 2002. The fatal Cleft Peak debris flow of 3 January 2002, Upper Rees Valley, West Otago Institute of Geological & Nuclear Sciences science report 2002/03. 28 p.
  7. "Rees-Dart Track". New Zealand Department of Conservation. Retrieved 28 August 2009.
  8. "Place name detail: Rees River". New Zealand Gazetteer. New Zealand Geographic Board. Retrieved 2 February 2021.
  9. Reed, A. W. (1975). Place names of New Zealand. Wellington: A.H. & A.W. Reed Ltd. p. 357
  10. "A cruise in Queenstown". Otago Daily Times. 2018.

44°51′S 168°23′E

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