| Great Bear River | |
|---|---|
.png) Great Bear River exits Great Bear Lake near
Deline | |
| Native name | Sahtúdé ( Slave) |
| Location | |
| Country | Canada |
| Physical characteristics | |
| Source | |
| • location | Great Bear Lake, Northwest Territories, Canada |
| • coordinates | 65°08′03″N 123°30′45″W / 65.13417°N 123.51250°W |
| • elevation | 186 m (610 ft) |
| Mouth | Mackenzie River |
• location | Tulita, Northwest Territories, Canada |
• coordinates | 64°54′21″N 125°36′12″W / 64.90583°N 125.60333°W |
• elevation | 60 m (200 ft) |
| Length | 113 km (70 mi) |
| Basin size | 156,500 km2 (60,400 sq mi) |
| Discharge | |
| • location | Mackenzie River [1] |
| • average | 528 m3/s (18,600 cu ft/s) |
| • maximum | 995 m3/s (35,100 cu ft/s) |
| [2] [3] | |
The 113-kilometre-long (70 mi) Great Bear River, which drains the Great Bear Lake westward through marshes into the Mackenzie River, forms an important transportation link during its four ice-free months. It originates at south-west bay of the lake. The river has irregular meander pattern 350-metre-wide (1,150 ft) channel with average depth 6 metres (20 ft). Historic air photos show no evidence of bank erosion or channel migration in a 50-year period.
The low discharge rate is due to small amount of precipitation in watershed area. [4] Great Bear River contained open reaches that had melted out in place over 80 percent of its length in 1972 and 1974. [1]
The settlement of Tulita is located at the mouth of the river.
Tributaries
The tributaries of the Great Bear River include; [3]
- Porcupine River
- Rosalie Creek
- Stick Creek
- Wolverine Creek
- St. Charles Creek
- Brackett River
See also
References
- ^ a b [1][ permanent dead link] HARE INDIAN RIVER. TABLE 6-1 Great Bear River
- ^ "Natural Resources Canada-Canadian Geographical Names (Great Bear River)". Retrieved 2014-12-21.
- ^ a b "Atlas of Canada Toporama". Retrieved 2014-12-21.
- ^ [2] Archived 2006-05-07 at the Wayback Machine Maps of Canada Annual Precipitation
External links
- Great Bear Lake: Facts, Discussion Forum, and Encyclopedia Article
- Canadian Council for Geographic Education page with a series of articles on the history of the Mackenzie River.
- Mackenzie River (river, Canada) : The lower course -- Britannica Online Encyclopedia.
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| National | |
