The Sumas River is a river in the Fraser Lowland and a tributary of the Fraser River system, coursing across the international border between the Canadian province of British Columbia and the U.S. state of Washington. == Course == The Sumas River originates in the Sumas Mountain (American Sumas) in Whatcom County, Washington, with its tributary creeks draining the mountain's western and northern slopes.
The Sumas River is a river in the Fraser Lowland and a tributary of the Fraser River system, coursing across the international border between the Canadian province of British Columbia and the U.S. state of Washington. == Course == The Sumas River originates in the Sumas Mountain (American Sumas) in Whatcom County, Washington, with its tributary creeks draining the mountain's western and northern slopes.
Source: Wikipedia "Sumas River" · CC BY-SA 4.0
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