The Deûle River is a waterway located in northern France, primarily flowing through the region of Hauts-de-France. It stretches approximately 80 kilometers and is known for its scenic landscapes and historical significance. The river eventually joins the Lys River, contributing to the larger Escaut River system. Historically, the Deûle River played a vital role in trade and transportation, particularly during the Middle Ages. It has been an important route for shipping goods and connecting various towns, including Lille. Today, the river is also a popular spot for recreational activities such as boating and fishing.