The pool operates from May 20 until September 17 with the hours shown below. Please check the Calendar for Swim and Dive Team Meet, holiday, and special event hours. Note that the pool closes Wednesdays at 4:45pm during Home “B” Swim Meets and opens at Noon when Merrimack is hosting Saturday “A” Swim Meets. The diving well closes on Sundays at 3:00pm for Dive Team Home Meets. Call the pool at 301-229-6579 (in season only) for inclement weather updates.


The pool is available on weekday mornings 6:30am-7:30am June 19 through August 18. Everyone using the pool during the Early Bird swim hours must pay the additional $50 per swimmer fee and sign-in upon arrival. Early Bird Swimmers must be 18+ years of age.


Refer to the lap lane schedule below. Merrimack makes at least one lap lane available at all times, including Swim Team practice times. Two lap lanes are typically installed at other times. The number of lap lanes may change due to pool events or at the discretion of pool management.

May 20 – May 21Saturday – SundayNoon – 6:00pm
May 22 – May 25Monday – Thursday4:00pm – 7:00pm
May 26Friday4:00pm – 8:00pm
May 27 – May 29
Memorial Day Weekend
Saturday – Monday11:00am – 8:00pm
May 30 – June 16Saturday – Sunday11:00am – 8:00pm
Monday – Thursday3:00pm – 8:00pm
Friday3:00pm – 10:00pm
June 17 – September 1Saturday – Sunday10:00am – 8:00pm
Monday – Thursday11:00am – 9:00pm
Friday11:00am – 10:00pm
July 4
Independence Day
Tuesday10:00am – 6:00pm
September 2 – September 4 Labor Day WeekendFriday – Monday10:00am – 8:00pm
September 5 – September 17Monday – Friday4:00pm – 7:00pm
Saturday – SundayNoon – 6:00pm
Until June 192 laps lanes11:00am – 4:30pmMonday – Thursday
1 lap lane4:00pm – 7:45pm
2 or more laps lanes7:45pm – Close
1 lap lane4:00pm – 5:45pmFriday, June 16
June 19 – July 192 laps lanes11:00am – 4:00pmMonday – Thursday
1 lap lane4:00pm – 7:30pm
2 laps lanes7:30pm – Close
2 laps lanes11:00am – 10:00pmFriday
After July 192 lap lanesSee Pool Open Hours AboveSee Pool Open Days Above