The Fox River is a river located in the northeastern part of the United States, primarily flowing through the state of Illinois. It stretches approximately 200 miles, starting from the Wisconsin border and winding its way southward until it joins the Illinois River. The river is known for its scenic beauty and recreational opportunities, including fishing, boating, and hiking along its banks. The Fox River watershed supports various ecosystems and wildlife, making it an important natural resource. Several towns, such as Elgin and Aurora, are situated along its banks, contributing to the region's economy and culture. The river also plays a role in local history, having been a significant transportation route in the 19th century.