Arlington Reservoir, known locally as 'the Res,' is a filtered, chlorinated man-made swimming pond on the Arlington-Lexington line with a sand beach, bathhouse and lifeguards each summer, plus a surrounding trail loop and a kayak launch past the vehicle gate.
What to expect
Entry fee
Day pass: $15 adult, $10 child (age 2+) and senior; twilight rate after 5pm is $10 adult, $5 child/senior
Dogs
Dogs are not allowed on the beach during the June through August swim season; off-leash hours generally apply park-wide only before 9am per Arlington's dog bylaw
Banned now · back AugustHours
Daily 9:00 AM to 7:00 PM, June 15 to August 21, subject to change based on lifeguard availability
Swim
Allowed mid-June to late August
Kayak/Canoe/Sup
Allowed year-round, ice-out to freeze-up
Fishing
Allowed unconfirmed exact season
Managed by
Arlington Recreation Department / Arlington Reservoir Committee
781-316-3880 · WebsiteGetting in
Parking
Parking not sourced yet
Check the town or agency pages before you go.
What's here
On site
Picnic area
Picnic pavilion
Common questions
Is Arlington Reservoir open today?
Arlington Reservoir is a public pond in Lexington, MA. Posted hours: Daily 9:00 AM to 7:00 PM, June 15 to August 21, subject to change based on lifeguard availability.
Can I kayak on the reservoir?
Yes, canoes and kayaks are allowed and there is a hand-launch point past the vehicle gate near the wildlife habitat gardens off Lowell Street.
Yes, the lots off Lowell Street are free and available year-round, though they can fill on hot summer afternoons.
Can dogs come to the beach?
Not during the June through August swim season; general park dog rules with morning off-leash hours apply the rest of the year.
Is there an entry fee at Arlington Reservoir?
Yes, Day pass: $15 adult, $10 child (age 2+) and senior; twilight rate after 5pm is $10 adult, $5 child/senior
Can I bring my dog to Arlington Reservoir?
Dogs are not allowed on the beach during the June through August swim season; off-leash hours generally apply park-wide only before 9am per Arlington's dog bylaw
What rules should I know at Arlington Reservoir?
Swimming is only permitted during posted lifeguard hours in the roped beach area. No animals allowed on the beach under Park Department care and control, with dogs excluded from the beach June through August.