Three Oaks Recreation Area offers Group Uses at our facility throughout the summer and into the fall.

A Group Use can be a school field trip, day camp, day care, troop or league visit, etc. Looking to bring your group to the beach, marina boat rental, hiking trails or even just for a picnic? Contact City staff at (815) 459-2020 with questions or submit your application via email at


Regulations for Group Rates

  • Applications must be submitted at least 5 business days prior to visiting.
  • Group uses are allowed Monday – Thursday. Group uses are not allowed on Fridays, weekends or holidays.
  • Persons applying for a group outing must be at least 21 years of age.
  • The Organization shall show proof of insurance and name the City as additional insured.


  • Swim Beach / Playground / Spray Park:

    The special group rate is $5.00 per person, including chaperones, for groups greater than 15. The swim beach is open from approximately Memorial Day to Labor Day. You may pay for your group on the day of your visit at Three Oaks or pay in advance at City Hall.
  • Watercraft / Marina:

    The group is eligible for resident rates on canoes, kayaks and paddleboats.
  • Parking:

    Non-resident vehicles are $5.00 each for parking. If using buses there is no charge. However, if your group’s bus uses more than one parking space, it will need to park off-site due to space limitations.

Group Use Forms

Applications can be submitted via email at Please contact City staff at (815) 459-2020 with additional questions.

Additional Reservations

If your group is looking to reserve a pavilion in addition to a Group Use, please call City Hall at (815) 459-2020 to check pavilion availability. Then, complete and return the Pavilion Rental Permit Application to . All rental fees must be paid upfront for the pavilion. Additional information regarding pavilion reservations and applications can be found here.

General Rules

  • The City will take a count of all group participants and adults when you enter/arrive at the facility and will be given official wristbands.
  • If your group utilizes the beach or marina, the count that is taken will be signed off by the main contact person for the group. Payment is expected prior to your planned visit or day of at the facility.
  • A Group Use Participant Form must be completed and submitted for each participant attending your group outing prior to entering the facility.
  • Persons applying for a group outing must be at least 21 years of age.
  • Groups with youths under the age of 18 must have one adult over 21 for every 7 youths. Any group which does not have adequate supervision or fails to maintain discipline will be asked to leave.
  • City sponsored activities shall have priority in all areas of the facility.
  • Contact person or organization officials must be present during the rental. In addition, all chaperones must attend to the group for the duration of the visit, be in proper swim attire (if the swim beach is utilized) and assist children in the water.
  • Three Oaks Recreation Area rules and Illinois Department of Public Health Guidelines must be followed while visiting the beach/playground/spray park.
  • In the event of inclement weather, the city will not issue any partial refunds. However, you may work with the City to reschedule your visit for another date.
  • No unattended groups of minors are allowed in the locker room.
  • All groups must wear an identifiable wristband for the duration of the visit.

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