The Great Miami River is a major waterway located in southwestern Ohio. It flows approximately 99 miles, starting in Darke County and emptying into the Ohio River near Cincinnati. The river is known for its scenic beauty and recreational opportunities, including fishing, kayaking, and hiking along its banks. Historically, the Great Miami River played a significant role in the development of the region, serving as a transportation route for Native Americans and early settlers. Today, it is an important resource for local communities, providing water supply and supporting wildlife habitats along its floodplain.