ALLTOURS

Who Owns the Water That Flows from Canada into the United St? Lesser-Known Border Waters

1. The Boomerang River: Milk River

Alberta, Canada / Montana, USA

It's the only river that flows from Canada into the US and then *back* into Canada, defying simple cross-border definitions.

2. America's Accidental Island: The Northwest Angle

Minnesota, USA / Manitoba, Canada

This sliver of US land, part of Minnesota, is physically attached to Canada and requires crossing international borders twice to reach by land.

3. A Border Forged in Water: St. Croix River

Maine, USA / New Brunswick, Canada

The St. Croix River was chosen as the international boundary in 1783, leading to centuries of surveys and disputes over its exact course.

4. The Submerged Towns: Arrow Lakes

British Columbia, Canada

Beneath the tranquil surface of these reservoirs lie the remnants of entire communities, flooded by the Columbia River Treaty for downstream power generation in the US.

5. North America's Undammed Gem: Flathead River

British Columbia, Canada / Montana, USA

This pristine river, flowing across the international border, remains undammed thanks to decades of cross-border conservation efforts.

6. The Northern Flow: Aroostook River

Maine, USA / New Brunswick, Canada

Unlike most Canada-US rivers, the Aroostook begins in Maine and flows north-eastward into New Brunswick, a unique reversal of the typical water path.

7. Where Mountains Meet and Waters Divide: Waterton-Glacier International Peace Park

Montana, USA / Alberta, Canada

This international park is home to the Triple Divide Peak, a unique hydrological point sending water to three different oceans via separate river systems.

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