Monongahela River
The Monongahela River ( , )—often referred to locally as the Mon ()—is a river on the Allegheny Plateau in north-central West Virginia and southwestern Pennsylvania. The river flows from the confluence of its west and east forks in north-central West Virginia northeasterly into southwestern Pennsylvania, then northerly to Pittsburgh and its confluence with the Allegheny River to form the Ohio River. The river's entire length is navigable via a series of locks and dams.
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river
Concept
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Allegheny Plateau
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north-central West Virginia
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southwestern
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Pennsylvania
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Allegheny River
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Ohio River
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Monongahela River
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instance of
mouth of the watercourse
mouth of the watercourse
origin of the watercourse