How Far Upstream Does The Merrimack River Tidal Reach?

The Merrimack River extends for a total distance of 116 miles before it reaches its final destination, the Atlantic Ocean, in Newburyport, Massachusetts. It is important to note that a specific section of the river, referred to as the Lower Merrimack, has been designated under the New Hampshire Rivers Management and Protection Program since June 1990. This designation serves to safeguard approximately 45 miles of the river’s course within the state of New Hampshire, ensuring its conservation and management.

The Merrimack River, a vital waterway in New England, exhibits varying depths, with its shallowest areas measuring only a few feet deep. However, it reaches its maximum depth of 43.5 feet at a specific point along its course. This depth is a significant characteristic of the river, highlighting its capacity to accommodate various water-related activities and serving as a valuable resource for the region.

The Merrimack River has a distinctive course as it winds its way through both New Hampshire and Massachusetts. Originating in the northern reaches of New Hampshire, the river initially flows southward through the cities of Concord, Manchester, and Nashua, providing a vital watercourse for these communities. As it continues its journey, the Merrimack River takes a northeasterly course, passing through the urban centers of Lowell, Lawrence, and Haverhill in Massachusetts. Finally, it reaches its destination as it empties into the Atlantic Ocean at the picturesque coastal town of Newburyport. This remarkable river serves as a crucial natural feature for both states, offering recreational opportunities, supporting local economies, and playing a role in the broader ecological landscape.