The 35-mile Ipswich River flows into the Atlantic Ocean at Ipswich Bay. The Ipswich River Water Association works to protect the river and its watershed. Foote Brothers Canoes on Topsfield Rd provides rentals and shuttle service from April to October.
Known in Colonial times as Mile Brook, the Miles River is a major tributary of the Ipswich River but has been diminished in volume by upstream use as a water supply. Evidence of the old Potter and Appleton mills can still be found near County Rd.