USA MA NH: Merrimack River USA MA NH: Merrimack River Illustration map of Merrimack River in Massachusetts and New Hampshire, USA map, ecosystem, geography, geographical, USA, United States of America, MA, Massachusetts, NH, New, Hampshire, Merrimack River, Pemigewasset River, Winnipesaukee River, Atlantic Ocean 2010-02-16 image/svg+xml USA MA NH: Merrimack River 2010-02-16 Integration and Application Network https://ian.umces.edu/media-library/usa-ma-nh-merrimack-river/ https://ian.umces.edu/media-library/usa-ma-nh-merrimack-river/ en-US map, ecosystem, geography, geographical, USA, United States of America, MA, Massachusetts, NH, New, Hampshire, Merrimack River, Pemigewasset River, Winnipesaukee River, Atlantic Ocean Illustration map of Merrimack River in Massachusetts and New Hampshire, USA