A freshwater pond known locally as "The Res," with a sandy beach, bathhouse and lifeguards in summer; also used for fishing and non-motorized boating outside the roped swim area.
What to expect
Parking
Not confirmed · unconfirmed
Entry fee
Resident $7/person or $28 family max per day; non-resident $10/person or $40 family max per day (2026 rates)
Dogs
Not permitted on the beach during swim season (June-August)
Banned now · back AugustHours
Weekends 12-6pm noted for shoulder season; regular-season daily hours not separately confirmed
Swim
Allowed Jun-Aug, lifeguard hours only
Fishing
Allowed outside swim season on the beach; year-round elsewhere
Kayak/Canoe/Sup
Allowed non-motorized craft, in-season
Managed by
Lexington Recreation & Community Programs Department - Aquatics
781-698-4930 · WebsiteGetting in
Parking
Parking not sourced yet
Check the town or agency pages before you go.
What's here
On site
Picnic area
Picnic tables outside the bathhouse
Common questions
Yes, but only during posted hours when a lifeguard is on duty.
Not on the beach during the June-August swim season.
Is this good for young kids?
It has a sandy, gently sloped beach and a roped-off swim area with lifeguards, which makes it manageable for families, though there is no beach wheelchair or Mobi-Mat confirmed.
Is there an entry fee at The Old Reservoir?
Yes, Resident $7/person or $28 family max per day; non-resident $10/person or $40 family max per day (2026 rates)
Can I bring my dog to The Old Reservoir?
Not permitted on the beach during swim season (June-August)
What rules should I know at The Old Reservoir?
Swim diapers required for non-toilet-trained children; individuals with open cuts, bandages or communicable disease may not enter the water. No dogs on the beach during swim season (June-August). Fishing not permitted on the beach during swim season. No swimming without a lifeguard on duty;…