The Cocheco River is a tributary of the Piscataqua River located in southeastern New Hampshire. It flows through the city of Dover and is approximately 12 miles long. The river is known for its scenic beauty and is an important natural resource for the surrounding communities. Historically, the Cocheco River played a significant role in the development of Dover, providing water power for mills during the industrial era. Today, it supports recreational activities such as fishing, kayaking, and hiking along its banks, contributing to the local economy and quality of life.