How many ponds are in Lincoln, MA?
5 ponds in Lincoln, MA are listed here: Beaver Pond / Stony Brook South, Farrar Pond, Flint's Pond, Sandy Pond North, Walden Pond State Reservation. Each page has parking, entry fees, and hours where they are confirmed, and says so where they are not.
Which ponds in Lincoln, MA are free to enter?
Farrar Pond, Flint's Pond, Sandy Pond North, Walden Pond State Reservation. Free entry is confirmed for these; the others either charge or have no confirmed fee on record.