The Río Ohio, or Ohio River, is a major river in the United States, flowing approximately 981 miles. It originates in Pittsburgh, Pennsylvania, where the Allegheny and Monongahela Rivers meet. The river serves as a natural boundary between several states, including Ohio, Kentucky, and West Virginia. The Ohio River is an important waterway for transportation and commerce, connecting to the Mississippi River system. It supports various ecosystems and provides recreational opportunities, such as fishing and boating. The river also plays a significant role in the history and development of the surrounding regions.