Sea Lion Aquatic Park Closed for 2020 Season

Since the start of the pandemic, safety has remained our top priority and serves as a guide for operational decisions. After much deliberation, we are saddened to announce the closure of Sea Lion Aquatic Park and all aquatic programming for the summer of 2020. As the flagship facility of the Lisle Park District, this decision did not come easily but was made in the best interest of our patrons, staff, and the entire Park District.

For detailed information, please reference our web page dedicated to Coronavirus COVID-19 updates, which includes a list of FAQs that is continually updated as conditions change.

View COVID-19 FAQs

If you previously purchased a 2020 Season Pass, we are offering several options in relation to the fees you've already paid. Please visit the Season Pass page to read through the opportunities available to you and submit your refund option via email following the instructions outlined. We hope to see you next year!

2020 Season Pass Information


A Nationally Recognized, Award-Winning Aquatic Park Everyone Can Enjoy!

Sea Lion Aquatic Park is an award-winning water park that offers refreshing summertime fun for residents and visitors. It is the perfect venue for birthday parties or other celebrations.

Sea Lion Park features a large open swim area that slopes upward to a zero-depth shallow end, which allows for easy entry into the pool for everyone. With two 50' body flume slides, two drop slides, a vortex pool, splash playground, sand & kiddie water play area, teen pool and more, there's something fun for everyone! Adult and senior designated swim schedules are offered as well.

Sea Lion Aquatic Park offers a full-service concession stand, locker room facilities, party rentals, swimming lessons, water fitness classes, Sea Lion Swim Team activities and special events throughout the summer.

Click Here to Learn More About Our Sea Lion Aquatic Park Memberships


Hours of Operation



Weather & Other Closings

Sea Lion Aquatic Park will not be in operation under the following conditions and refunds or prorated fees will not be given under the following circumstances:

  • Forecasted weather is below 68 degrees according to the National Weather Service.
  • Lightning, severe rain, or any other condition that would jeopardize swimmer safety.
  • Mechanical failure - if this occurs you will be notified of the option to attend other local facilities.
  • Special events.
  • From time to time, the temperature may be above 68 degrees, however, weather conditions are not appropriate for swimming.
  • Low attendance. (Low attendance closings will be under the discretion of the Sea Lion Aquatic Park Management).
  • Unusual circumstances may also require the closure of pool areas or sections.

Please Note

  • Certain park features may close due low attendance.
  • If the pool is closed at the 11:30am opening, attempts to re-open the pool will be made throughout the day, weather permitting.
  • Refunds, rain checks, or prorated fees are not offered for any type of pool closure. Please refer to our rain check policy below for further details.

Rain Check Policy
  • A re-entry pass will be issued only to person(s) who paid a daily fee and within 2-hours of purchase if the facility closes for the day due to inclement weather. Rain check re-entry passes will be valid until the end of the season in which the pass was issued. In order to redeem rain check re-entry pass, patrons must show a valid entry receipt.

Call 630-964-3410, ext. 2, opt. 2 for daily pool opening and closing information.


Contact Information

From time to time the pool may be closed for a specific reason, you may have an emergency and need to contact someone at the facility, need last minute swim lesson information, or have other questions about pool events and operation. Please utilize these phone numbers, check the website, and look at the Sea Lion Aquatic Park sign for updates on pool happenings.

Phone Hotline: 630-964-3410, ext. 2, opt. 2

  • Option 1 - (Hours and Fees)
  • Option 2 - (Daily Pool Update / Weather / Closings)
  • Option 3 - (Facility Rentals and Birthday Parties)
  • Option 4 - (Swim Lesson Hotline)
  • Option 5 - (Swim Team Hotline)
  • Option 6 - (Pool Manager)
  • Option 7 - (Lifeguard Office)

Emergencies: 630-964-3410, ext. 4321