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Grassy Pond Conservation Area

Details unconfirmedPond · Acton, MA · Parking on Nagog Hill Road and Newtown Road
Right now

Built around a quiet pond northwest of Acton Center, this 107-acre conservation property has a yellow loop trail, a 425-foot boardwalk through a red maple swamp, and a wooden observation pier at the water. It connects to the neighboring Nagog Hill and Anderson properties for a longer walk.

What to expect

Trails
1.1-mile main loop, more than 3 miles possible with the Nagog Hill connector; largely level from Newtown Road with a long boardwalk, stony and sloping from…
Entry fee
Free
Dogs
Dogs must be controlled at all times; waste must be picked up on the trails
Hours
One hour before sunrise to one hour after sunset
Birdwatching
Allowed
Managed by
Acton Conservation Division (978) 929-6634 · Website

What's here

On site

Info kiosk
kiosks at both main parking areas

Not here

No drinking water

Worth knowing

  • A separate 10.9-acre parcel called Grassy Pond West, added by the Acton Conservation Trust, protects the last undeveloped stretch of the pond's shoreline.

Common questions

Can I swim here?
There is no designated swimming area; the pond is for walking, viewing, and wildlife, not bathing.
Is the loop stroller-friendly?
Not entirely, the Newtown Road side is fairly level with a boardwalk but the Nagog Hill Road side is stony and slopes toward the pond.
Is there an entry fee at Grassy Pond Conservation Area?
No, entry is free.
Can I bring my dog to Grassy Pond Conservation Area?
Dogs must be controlled at all times; waste must be picked up on the trails
What rules should I know at Grassy Pond Conservation Area?
Trail surface is quite stony and occasionally wet. Alcohol prohibited. Motor vehicles prohibited except as authorized by the Conservation Commission.

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Nearby ponds

More in Acton

Preserves & forests (24) · Parks (10) · Playgrounds (2) · Boat & kayak launches (1) · Campgrounds (1) · Dog parks (1)

BetaSome details here are unconfirmed (explicit hunting_season citation, restroom info). Details are sourced from public agency data and can change through the season. Confirm locally before you go. Updated 2026-11-06.