The Mahoning River is a waterway located in northeastern Ohio and western Pennsylvania. It flows approximately 113 miles, starting in the Allegheny Mountains and eventually joining the Shenango River to form the Ohio River. The river has played a significant role in the region's industrial history, particularly during the steel manufacturing boom. The Mahoning River passes through several cities, including Youngstown and Warren, and is known for its scenic beauty and recreational opportunities. Efforts have been made to improve water quality and restore the river's ecosystem, making it a focus for conservation and community engagement initiatives.