Great Bear River
| Great Bear River (Sahtúdé) | |
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Great Bear River exits Great Bear Lake near Deline
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| Country | Canada |
|---|---|
| Source | |
| - location | Great Bear Lake, Northwest Territories, Canada |
| - elevation | 186 m (610 ft) |
| - coordinates | Lua error in package.lua at line 80: module 'strict' not found. |
| Mouth | Mackenzie River |
| - location | Tulita, Northwest Territories, Canada |
| - elevation | 60 m (197 ft) |
| - coordinates | Lua error in package.lua at line 80: module 'strict' not found. |
| 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) |
| [2][3] | |
The 113-kilometre (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-metre (1,150 ft) wide 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
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