| Great Bear River (Sahtúdé) | |
| River | |
| Country | Canada |
|---|---|
| Source | |
| - location | Great Bear Lake, Northwest Territories, Canada |
| - elevation | 186 m (610 ft) |
| Mouth | Mackenzie River |
| - location | Tulita, Northwest Territories, Canada |
| - elevation | 60 m (197 ft) |
| Length | 113 km (70 mi) |
| Basin | 156,500 km2 (60,425 sq mi) |
| Discharge | for Mackenzie River[1] |
| - average | 528 m3/s (18,646 cu ft/s) |
| - max | 995 m3/s (35,138 cu ft/s) |
The 113 km (70 mi)-long 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 m (1,148 ft) wide channel with average depth 6 m (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[2]. Great Bear River contained open reaches that had melted out in place over 80% of its length in 1972 and 1974.[1].
Contents |
Communities on the Great Bear River
See also
References
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.
Coordinates: 64°54′15.58″N 125°36′24.08″W / 64.9043278°N 125.6066889°W
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