Merrimack River: Cashman Park to Amesbury and the Mouth of the Merrimack River Professional Review and Guide
"The mouth of the Merrimack at Newburyport is a strong and exciting place. The 115-mile river flows through most of New Hampshire, including Manchester and the Massachusetts mill towns of Haverhill, Lowell, and Lawrence, then meets the sea at two stone jetties between Plum Island and Salisbury Beach. With a name derived from the Indian word merruasqumack, the river starts at the confluence of the Pemigewasset (which starts at Proflie Lake in Franconia) and Winnipesaukee Rivers (starting from the lake of that same name).
The mouth has some exhilarating paddling for the sea kayaker provided necessary precautions are taken for timing the trip with a fair tide. The area is superior for bird watching because it borders the Parker River National Wildlife Refuge, a primary flyway for migrating birds. On a late-April day, you may spot brant ducks and snow geese, both of which live in the Arctic during summer. In winter, bald eagles nest around Carr’s Island and Maudslay State Park, which has a protected habitat for wintering eagles. The river is also home to wintering ducks, including mergansers, goldeneyes, and mallards; a host of cormorants perch under the Swing Bridge."