Off leash path surrounds Fresh Pond Resevoir. Often there are many other dogs to interact with and there are a few ponds for those interested in a doggie paddle. Must have Cambridge resident sticker to park. Litter bags and trash barrels available. 2 sources of water. dogs restricted from running on grassy areas; The only dogs allowed off-leash at Fresh Pond are Cambridge resident dogs with an off-leash tag (permit) which is only available to Cambridge residents who purchase one. For these ‘off-leash permit’ dogs, they are building a new open grass play area for off-leash play on the side closest to the big rotary, but again only open to residents who purchased the off-leash tag. All other dogs are considered ‘visiting dogs’ will be required to be on-leash and will be fined for off-leash violations. One place to swim. Location: 250 Fresh Pond Pkwy.