Oldman River

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Oldman River
The Oldman River just before its mouth

The Oldman River just before its mouth

Data
location Alberta (Canada)
River system Nelson River
Drain over South Saskatchewan River  → Saskatchewan River  → Nelson River  → Hudson Bay
source in the Beehive Natural Area in the Rocky Mountains
50 ° 6 ′ 50 ″  N , 114 ° 43 ′ 14 ″  W
Source height 2100  m
confluence near Grassy Lake with the Bow River to the South Saskatchewan River Coordinates: 49 ° 56 '0 "  N , 111 ° 41' 30"  W 49 ° 56 '0 "  N , 111 ° 41' 30"  W
Mouth height 701  m
Height difference 1399 m
Bottom slope 3.9 ‰
length 363 km
Catchment area 26,700 km²
Discharge at the gauge near the mouth of the
A Eo : 27,500 km² 		MQ 1964/2000
Mq 1964/2000
 		72 m³ / s
2.6 l / (s km²)
Left tributaries Livingstone River , Willow Creek , Little Bow River
Right tributaries Crowsnest River , Castle River , Belly River , St. Mary River , Pincher Creek
Reservoirs flowed through Oldman River Dam
Medium-sized cities Lethbridge

The Oldman River is a 363 km long river in the southern Canadian province of Alberta , which got its name from Napi or Old Man , the tallest being among the Blackfoot .

It has its source in the Rocky Mountains , in the Beehive Natural Area , flows through Bob Creek Wildland Park and Black Creek Heritage Rangeland , and continues eastwards through Fort Macleod , Lethbridge and Taber on to Grassy Lake , where it meets the Bow River united to the South Saskatchewan River . This flows into the Hudson Bay . The Oldman River drainage area covers approximately 26,700 km². The Oldman River Provincial Recreation Area was established on the river as a recreation area .

The river itself is not particularly wide, but in places it flows up to 100 m deeper than the surrounding plateau. While roads like the Crowsnest Highway cope more easily with the inclines that arise and therefore cross the Oldman River on comparatively low bridges in the valley, two large viaducts had to be built for the railway line . The larger Lethbridge Viaduct is over 1,600 m long and spans the entire valley at a height of up to 95 m.

On the Oldman River are also the reservations of two Indian tribes , the Piegan Timber Limit B and Piegan 147 of the northern Piegan and reservation No. 148 of the Blood and Kainai . In 1990 the Alberta government planned to build a dam, accepting that a Blackfoot burial site would be flooded. Under the leadership of Milton Born With A Tooth, the Blackfoot, more precisely the Piegan Lonefighters Society , diverted the river itself in order to render the Oldman River Dam worthless. Nevertheless, the dam at the confluence of the Oldman River, Crowsnest River and Castle River was completed in 1992. Ecological concerns, which were raised above all by the Friends of the Oldman River Society , were not allayed with an expert opinion drawn up after the fact - it would have been legal to obtain the expert opinion beforehand.

literature

  • [www3.brandonu.ca/cjns/25.2/cjnsv25no2_pg571-607.pdf Jay Hansford C. Vest: The Oldman River and the Sacred: A Meditation upon Aputosi Pii'kani Tradition and Environmental Ethics , University of North Carolina at Pembroke, North Carolina ] (PDF, 2.2 MB)

See also

Web links

Remarks

  1. ↑ a b The Atlas of Canada - Rivers ( Memento from January 22, 2013 in the Internet Archive ) (English)
  2. ↑ Oldman River at the gauge near the mouth - hydrographic data from R-ArcticNET