A federal wildlife refuge unit off Monsen Road with impoundments, a boardwalk-adjacent observation tower and about 2.7 miles of flat trails along the Concord River, run by U.S. Fish and Wildlife Service.
What to expect
Trails
Four trails totaling about 2.7 miles with minimal elevation gain; the Dike Trail runs between two impoundments to the Concord River shore.
Entry fee
An entrance fee is charged at the Concord Unit (exact current amount not confirmed); America the Beautiful federal recreation passes are accepted. checked Jul 22, 2026
Dogs
Pets are not permitted (service animals excepted); bicycles also not allowed.
Hours
Sunrise to sunset year-round.
Accessibility
An observation tower is easily accessible from the parking lot, and there is an observation pier off the Dike Trail; trails are flat with minimal elevation gain.
Birdwatching
Allowed Year-round, refuge is a major migratory-waterfowl stop
Managed by
U.S. Fish and Wildlife Service
(978) 562-3527 · WebsiteCommon questions
Is there an entrance fee at Great Meadows Concord Unit?
Yes, an entrance fee applies at the Concord Unit and America the Beautiful annual passes are accepted, unlike the free Sudbury Unit of the same refuge.
No, pets are not allowed on refuge trails except certified service animals under direct control.
Is there an entry fee at Great Meadows National Wildlife Refuge?
An entrance fee is charged at the Concord Unit (exact current amount not confirmed); America the Beautiful federal recreation passes are accepted.
Can I bring my dog to Great Meadows National Wildlife Refuge?
Pets are not permitted (service animals excepted); bicycles also not allowed.
Is Great Meadows National Wildlife Refuge wheelchair accessible?
An observation tower is easily accessible from the parking lot, and there is an observation pier off the Dike Trail; trails are flat with minimal elevation gain.
What rules should I know at Great Meadows National Wildlife Refuge?
No pets (except service animals) and no bicycles on refuge trails.