A 109-acre reservoir south of Oldham and Furnace ponds that serves as a Class A public water supply for the Abington/Rockland Joint Water Works; no swimming or boating is allowed here.
What to expect
Parking
Not confirmed · unconfirmed
Dogs
Pembroke requires any dog off its owner's property to be held on a chain or leash, or kept under its handler's immediate and effective control, and the bylaw sets no maximum leash length. Dogs are banned outright from the town's beaches…
Hours
Pembroke posts no townwide closing time for its parks and conservation land as of mid-2026. The one clock rule in its bylaws applies at the town beaches, where swimming ends at 10 p.m. Posted hours at the entrance win if they differ.
Managed by
Abington/Rockland Joint Water Works
Getting in
Parking
Parking not sourced yet
Check the town or agency pages before you go.
Common questions
Can I swim or paddle at Great Sandy Bottom Pond?
No, it's off-limits for recreation because it's used as a public drinking water supply.
Is there an entry fee at Great Sandy Bottom Pond?
Not confirmed; check the town's page before you go.
Can I bring my dog to Great Sandy Bottom Pond?
Pembroke requires any dog off its owner's property to be held on a chain or leash, or kept under its handler's immediate and effective control, and the bylaw sets no maximum leash length. Dogs are banned outright from the town's beaches and cemeteries. That's the town-wide default; watch for…
What rules should I know at Great Sandy Bottom Pond?
No swimming or boating; the pond is a protected drinking-water supply.