The Medlock River is a waterway located in Greater Manchester, England. It flows through several areas, including Ashton-under-Lyne and Droylsden, before joining the River Tame. The river is approximately 10 miles long and is part of the larger Mersey River basin. Historically, the Medlock River played a significant role in the industrial development of the region. It was used for transporting goods and powering mills during the Industrial Revolution. Today, the river is surrounded by parks and green spaces, providing recreational opportunities for residents and visitors alike.