Ipswich River

Ipswich River is a small river in northeastern Massachusetts, United States. It held significant importance in early colonial migrations inland from the ocean port of Ipswich. The river provided safe harborage at offshore Plum Island Sound to early Massachusetts subsistence farmers, who were also fishermen. A part of the river forms town boundaries and divides Essex County, Massachusetts on the coast from the more inland Middlesex County. It is 35 miles long, and its watershed is approximately 155 square miles , with an estimated population in the area of 160,000 people.
Historically, the settlement of Essex County began at the oldest community there, the tiny seaport of Agawam , and typically proceeded westward and northward along the Ipswich or its tributary creeks. When Middlesex County was formed in the Massachusetts Bay Colony, only Salem and Charlestown across the Charles River mouth and Boston harbor's inner estuary from Boston's much smaller hill dominated peninsula were older settlements.

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