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Monongahela River Sometimes referred to as the Mon, the Monongahela River flows from West Virginia into western Pennsylavania. The headwaters of the Mon are at the confluence of the Tygart and West Fork rivers at Fairmont, West Virginia. The river joins with the Allegheny River in Pittsburgh, Pennsylvania, to form the Ohio River. Address: . . . USA
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Ohio River The Ohio River begins at the confluence of the Allegheny and Monongahela Rivers in Pittsburgh, Pennsylvania. Stretching 981 mi (1579 km), the river ends when it joins the Mississippi River at Cairo, Illinois. The river flows through or along the border of 14 states and was an important part of Native American life. Address: . . . USA
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Allegheny (Allegany) River A tributary of the Ohio River, the Allegheny River, also known as the Allegany River in New York, starts near Colesburg, Pennsylvania, curls north through New York state and then back into Pennsylvania. In Pittsburgh, the Allegheny and Monongahela rivers converge to form the Ohio River. |
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