The Essex River is a tidal river located in Essex County, Massachusetts. It flows approximately 3.5 miles from the Essex Bay to the Atlantic Ocean, providing a natural habitat for various wildlife and supporting local ecosystems. The river is known for its scenic beauty and recreational opportunities, including kayaking and fishing. Surrounded by marshlands and forests, the Essex River is part of the larger Essex River Basin. The area is rich in history, with the nearby town of Essex known for its shipbuilding heritage. The river also plays a role in the local economy, particularly in the seafood industry.