The Willimantic River is a tributary of the Connecticut River located in northeastern Connecticut. It flows approximately 14 miles, starting in the town of Willimantic and joining the Connecticut River near Haddam. The river is known for its scenic beauty and is surrounded by various parks and recreational areas. Historically, the Willimantic River played a significant role in the development of the local textile industry during the 19th century. Today, it serves as a habitat for various wildlife species and offers opportunities for activities such as fishing, kayaking, and hiking along its banks.