What county in Massachusetts has a state forest and an island that the Rowley River runs by?
Holy Island, Massachusetts: Holy Island is a marshy island located off the northeast coast of Massachusetts, north of Cape Ann. Holy Island, Massachusetts:  The island is situated immediately west of Plum Island and is part of the Town of Ipswich in Essex County. Holy Island, Massachusetts:  The Rowley River runs by the island, which is the northernmost of four marshy islands. Ipswich, Massachusetts: Ipswich is a coastal town in Essex County, Massachusetts, United States.
i don't know