Monongahela River

The Monongahela River is a major waterway in western Pennsylvania, flowing about 130 miles from its source in the Appalachian Mountains to Pittsburgh, where it joins the Allegheny River to form the Ohio River. It plays a key role in transportation, industry, and recreation in the region. Historically, it contributed to coal mining, steel manufacturing, and shipping, shaping local economy and communities. The river's natural landscape and scenic valleys also attract outdoor activities like fishing and kayaking, making it an important ecological and economic feature of the area.