Coldwater River (British Columbia)
| Coldwater River | |
 Coldwater River near Merritt, BC
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| Country | Canada |
|---|---|
| Province | British Columbia |
| Source | Zupkios Peak |
| - elevation | 1,344 m (4,409 ft) |
| - coordinates | 49°37′34″N 121°8′52″W / 49.62611°N 121.14778°W |
| Mouth | Nicola River |
| - location | Merritt, Nicola Valley |
| - elevation | 583 m (1,913 ft) |
| - coordinates | 50°6′53″N 120°48′15″W / 50.11472°N 120.80417°WCoordinates: 50°6′53″N 120°48′15″W / 50.11472°N 120.80417°W |
| Length | 95 km (59 mi) |
| Basin | 917 km2 (354 sq mi) |
| Discharge | for mouth |
| - average | 8.10 m3/s (286 cu ft/s) |
| - max | 122 m3/s (4,308 cu ft/s) |
| - min | 0.0 m3/s (0 cu ft/s) |
The Coldwater River is located in south central British Columbia, Canada. It is the largest tributary of the Nicola River, which it joins at the city of Merritt. The river drains a watershed of 917 square kilometres (354 sq mi). Its traditional native name is Ntstlatko ("cold water").
The Coldwater River originates in the Cascade Mountains west of Coquihalla Pass. Its headwaters flow from Zupjok Peak and other high mountains such as Llama Peak, Alpaca Peak, Vicuña Peak, and Guanaco Peak. It flows generally north for 95 kilometres (59 mi) before joining the Nicola River at Merritt. Major tributary creeks include Midday, Voght, Brook, Juliet, and July.
The river flows under the Coquihalla Highway at the Kingvale Interchange. The Coquihalla Highway runs through most of the Coldwater's valley, as do gas and oil pipelines. Canadian Pacific Railway tracks run along the northern part of the river.
The river flows through two Nlaka'pamux Indian Reserves belonging to the Coldwater Indian Band: the Coldwater Indian Reserve 1 and Paul's Basin Indian Reserve 2.
The river passes through two biogeoclimatic zones over its course. In its upper reaches, it passes through the Interior Douglas Fir Zone. As it passes into the Coldwater Valley bottom, the region changes to the drier Ponderosa Pine/Bunch Grass Zone.
Several species of Pacific salmon are present, including coho, chinook, and steelhead. Non-salmon species include bull trout, Rocky Mountain whitefish, longnose dace, redside shiner, bridgelip sucker, slimy sculpin, prickly sculpin, redside shiner, Pacific lamprey, leopard dace, longnose sucker, and rainbow trout.
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