The Mazon River is a small waterway located in the northeastern part of Illinois, USA. It flows through Grundy County and is a tributary of the Des Plaines River. The river is approximately 30 miles long and is known for its scenic beauty, winding through forests and farmland. The Mazon River is popular for recreational activities such as fishing, kayaking, and hiking along its banks. The surrounding area is home to diverse wildlife, making it an attractive spot for nature enthusiasts. The river also plays a role in local ecosystems, supporting various plant and animal species.