Definition
The Monongahela River is a river in the United States, flowing from West Virginia into Pennsylvania where it joins the Allegheny River to form the Ohio River. It's an important waterway for transportation and commerce in the region. Historically, it played a key role in the industrial development of the area, particularly for coal transport. It has faced challenges with pollution, but restoration efforts have improved water quality. Its name has Native American origins, reflecting the long history of human presence in the watershed.