season: June 2nd - August 17th 2025
Pool Hours
June 2nd thru Aug. 17th, 2025
Noon - 8PM Daily (weather permitting) Some closures at 7:00 pm for private events.
Weather Related Early Closures or Late Openings are announced via our facebook page. There are no refunds for weather-related early closures, it is up to you to check the weather and determine if it's a good pool day for your family or not.
We close the pool for 30 mins for every near-lightning strike or overhead thunder rumble. Pool activities will be suspended until 30 mins after the LAST lightning flash.
If the high for the day does not reach 70 degrees, we will not open AT ALL that day.
Shocking the pool for bodily fluids requires us to close down the pool for 30-60 mins.
Private Rentals available. $100/hr 10am-12noon rental slot or 7-9pm rental slot. Dependent on Lifeguards picking up the extra rental shift on top of their regular scheduled shift. Click here for more info. If cancelled due to bad weather, you can get a full refund, or you can try for another date. We now ask for paperwork and payment 7 days prior to event.
Pool Phone: 701-520-5734
Good information can also be found on the whiteboard to the right of the admissions window.
types of entry fees
- Season passes are NOT sold at the pool! You must purchase online or in the office, ahead of time.
- 2 years and under are free. Swim diaper required.
- Daily Admission $5 to enter the facility, whether you swim or watch. Good for the day. (Yes, you can leave and come back on the same day.)
- Individual Season Pass $82
- Family Season Pass $165 (immediate family only)
- Daycare Season Pass $100 (max 10 kids, Valid Monday-Friday, Noon-5pm)
Season Pool Pass Purchase Options:
- Anytime Online
- In person at Grafton Parks & Recreation office (715 West 5th Street) Monday through Friday 8am-5pm.
Children 10 & Under must be accompanied by an adult
- Children 10 and under need an Adult (nanny, babysitter, someone responsible for them).
- Children 11 and up can attend the pool by themselves for the 2025 Season. If you send them with younger siblings or friends, you're making the 11 year old responsible for themselves, AND younger children in the group. Please consider sending a responsible adult or nanny for their safety & supervision.
- Lifeguards on Duty but they are NOT responsible for caring for your children. Lifeguards are not a substitution for a babysitter, nanny, or parental supervision.
Large Groups- church camps/ summer school/ etc.
- As of 2025, we have a tiered admission system based on number of children admitted (Not the number of children swimming, the number of children total).
- All large groups MUST submit a schedule with dates, arrival and departure times for Grafton Parks' approval to avoid double booking. We don't allow two large groups to visit at the same time, but we do accommodate same-day visits as long as they don't overlap during arrival and departure. Email gabbi@graftonparks.com to inquire about availability.
- We will verify the number of children before they enter the facility. Please plan accordingly upon arrival.
- Our Pool Capacity is 120