Merrimack River

Boat Ramps: 21
Access Points: 42
Species: 27

The Merrimack River is a diverse and productive fishery stretching over 100 miles from its beginnings at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire, to its mouth at Newburyport, Massachusetts, where it enters the Atlantic Ocean. The river transitions from a nearly trout stream-like environment in its upper reaches through historic mill towns and urban areas before reaching the ocean. While not strikingly scenic throughout its entire length, the Merrimack offers excellent fishing opportunities with minimal pressure in many areas, particularly for warmwater species and migratory fish.

New Hampshire licenses and regulations4 to check before you go

Species & education

Learn what type of fish are at Merrimack River and what's needed to catch them.

Find which waters have the species you want to catch

Largemouth Bass

Micropterus salmoides

Smallmouth Bass

Micropterus dolomieu

Rainbow Trout

Oncorhynchus mykiss

Brown Trout

Salmo trutta

Brook Trout

Salvelinus fontinalis

Northern Pike

Esox lucius

Black Crappie

Pomoxis nigromaculatus

American Shad

Alosa sapidissima

Atlantic Salmon

Salmo salar

Bluegill Sunfish

Lepomis macrochirus

Brown Bullhead

Ameiurus nebulosus

Chain Pickerel

Esox niger

Channel Catfish

Ictalurus punctatus

Common Carp

Cyprinus carpio

Fallfish

Semotilus corporalis

Pumpkinseed

Lepomis gibbosus

Redbreast Sunfish

Lepomis auritus

Rock Bass

Ambloplites rupestris

Spotted Sunfish

Lepomis punctatus

Striped Bass

Morone saxatilis

Westslope Cutthroat Trout

White Catfish

Ameiurus catus

White Perch

Morone americana

White Seabass

Atractoscion nobilis

White Sucker

Catostomus commersonii

Yellow Bullhead

Ameiurus natalis

Yellow Perch

Perca flavescens

Fish stocking schedule

All stockings · 2

Brown Trout600 fish · YearlingsMay 29, 2026
Brown Trout900 fish · YearlingsApr 24, 2026

Source

New Hampshire Fish and Game Department

Updated Nov 13, 2026. Dates are as precise as the agency reports them.

Open stocking page

Fishing spots, boat ramps & amenities

Learn how to get on Merrimack River. Uncover great fishing access points, boat ramps, and all the facilities you need for an unforgettable day on the water. Some locations shown may border or include private property. Always check property boundaries and applicable regulations before visiting. onWater's Public & Private Land layer can help you plan your access with confidence.

Know where you can legally fish on Merrimack River

See public and private land boundaries along the water, turn on private parcels with owner details to know where permission is required, and find land-trust parcels that offer permitted fishing access.

New Hampshire licenses and regulations

New Hampshire Boating Regulations

When using any type of watercraft to access a body of water, it is important to follow all federal, state, and local rules and regulations. These rules and regulations include boat permitting and licensing, invasive species inspections and stamps, life jacket and PFD rules, motor size and horsepower restrictions, noise limitations, restrictions on personal watercraft, and many more. Visit the web link below for the most current rules and regulations for this body of water.

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New Hampshire Fishing License

Persons 16 years or older need a license to fish in freshwater or saltwater in New Hampshire.

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New Hampshire Fishing Regulations

This river has a variety of species and regulations, including potential floating and/or watercraft restrictions. Because this river is specially managed for species, seasons, angling methods, and watercraft, it is strongly encouraged you check all federal, state, and local regulations before fishing. Visit any of the links below, inquire locally, or contact a local fly shop to learn current regulations and restrictions.

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New Hampshire Stream Access Laws

Fishing is a New Hampshire tradition, one that we strive to pass on to present and future generations. With greater than 70% of New Hampshire’s land under private ownership, access for most shoreline and stream fishing occurs over private property. If we are to maintain the New Hampshire fishing tradition, it is important to remember that access to private land is a privilege provided to us through the generosity of landowners sharing their land. Practicing positive landowner relations is the key to maintaining access for present and future generations of anglers.

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Take Merrimack River with you

The onWater Fish app keeps this water's access points, species and conditions in your pocket, with the tools you use once you're there.

Use the map without signal
Download the map around Merrimack River to use it offline when coverage drops.
Log your catches here
Keep a private fishing journal for Merrimack River to find where and when fish are biting for you.

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