Leaf River (Quebec)
|Rivière aux Feuilles|
|- elevation||181 m (594 ft)|
|Mouth||Leaf Bay (off Ungava Bay)|
|- elevation||0 m (0 ft)|
|Length||480 km (300 mi) (includes Lake Minto)|
|Basin||42,500 km2 (16,400 sq mi) |
|- average||590 m3/s (20,840 cu ft/s) |
Leaf River (French: Rivière aux Feuilles; Inuktitut: Kuugaaluk (the large river) or Itinniq (where there are spring tides)) is a river in northern Quebec, Canada, at the northern limit of the tree line. It flows from Lake Minto northeast through the Ungava Peninsula into Leaf Bay off Ungava Bay over a distance of 480 kilometres (300 mi). At the head of Leaf Bay is the Inuit community of Tasiujaq.
It is possible to paddle the whole length of the Leaf River (with caution) without portaging - it doesn't contain impassable waterfalls or non-navigable rapids. The length of the river measured from Charpentier Bay to Tasiujaq is 320 kilometres (200 mi); if measured from first descernable current, it is 288 kilometres (179 mi).
The ice-free period on the river is short: about sixty days. That implies a quite low average daily temperature in the summer (approx. 10°C) generally accompanied by rain (or snow) and wind. In short, it is an environment where hypothermia can easily occur.
The significant tributaries of the Leaf River are:
- Charpentier River
- Nedlouc River
- Descareaux River
- Daunais River
- Goudalie River
- Vizien River
- Brissard River
- Qijuttuuk River
- Cohade River
- Tuktu River
- Dufreboy Creek
- Viennaux River
- Papijjusaq River
- Peladeau River
- Fanfan River
Since at least the late 19th century, the river has been known by its English name "Leaf River", which was probably derived from the Arctic willow and birch trees that grow sparsely along its banks. The Hudson's Bay Company fished there for salmon and porpoises and even opened a trading post at the mouth of the river circa 1905. In the early 20th century, the French name Rivière des Feuilles was assigned, standardized to its current form Rivière aux Feuilles in 1925.
The Leaf River caribou herd
The Leaf River caribou herd (LRCH), is a migratory forest-tundra ecotype of the boreal population, a caribou subspecies of Rangifer tarandus caribou. Like the George River Herd, the Leaf River herd migrates between forest and tundra. Migratory caribou herds are often defined in terms of female natal philopatry or natal homing - the tendency to return to natal calving areas, in this case the Leaf River. The Leaf Herd in the west, near the coast of Hudson Bay, increased from 270 000 individuals in 1991 to 628 000 in 2001. According to the Quebec's Natural Resources and Wildlife survey, the Leaf River Herd (LRH) (Rivière-aux-Feuilles) had decreased to 430 000 caribou in 2011. According to an international study on caribou populations, the Leaf River herd could be threatened with extinction by 2080.
- Natural Resources Canada, Atlas of Canada - Rivers
- FQCK (2000). Guide des parcours canotables du Quebec, Tome II. p. 233. ISBN 2-89000-504-6.
- "Rivière aux Feuilles" (in French). Commission de toponymie du Québec. Retrieved 2010-12-13.
- Lester Kovac and Lynette Chubb. "Charpentier/Leaf 2007".
- Bassi, Brad. "Northern Ungava Canoe Expedition".
- Kunin, Tim. "Pakboats on the Leaf River".
- Lange, Willem. "Pakboats on the Rivière aux Feuilles".
- "Quebec Canoe Maps".
- Bruce W. Hodgins & Gwyneth Hoyle (1997). Canoeing North into the Unknown (A Record of River Travel: 1874-1974). pp. 216–217. ISBN 0-920474-93-4.
- "Woodland Caribou: Rangifer Tarandus" (PDF), Wildlife Division (Government of Newfoundland), 2009, retrieved 14 January 2014
- Couturier, S.; Jean, D.; Otto, R.; Rivard, S. (2004), Demography of the migratory tundra caribou (Rangifer tarandus) of the Nord-du-québec region and Labrador (PDF), Québec: Ministère des Ressources Naturelles, de la Faune et des Parcs, Québec, and Direction de la recherche sur la faune, p. 68
- "Nunavik’s Leaf River caribou herd decreasing", Nunatsiaq News (Nunavik), 11 November 2011, retrieved 17 December 2011
- "Inuit, Inuu, Cree in Quebec and Labrador join forces to protect Ungava caribou: a united and powerful voice that will endeavor to preserve caribou", Nunatsiaq News, 26 April 2013, retrieved 14 January 2014
- Varga, Peter (20 December 2013), Warming climate threatens caribou in Nunavik, Labrador, Baffin: Study links species’ survival with stable climate (PDF), Institute of Arctic Biology, retrieved 14 January 2014
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