Address: 16821 O'Brien Trail N, Marine-on-St-Croix, MN, 55047
Upcoming Events: Jump to William O’Brien State Park Events
Website William O’Brien State Park
Summer recreation at William O’Brien State Park
Swimming
The swimming beach is on Lake Alice, a picturesque, spring-fed lake with a sandy shore. NOTE: The beach will be closed during the 2026-2027 summer seasons due to construction.
Share Your Experience/Tips:
We would love to hear your thoughts and parental tips. Share your experiences and any information you think other parents would find useful. Leave us a comment below.Upcoming Family-Friendly Events
Events TBA
Fun Past Events We Hope to See Again
Events TBA
Please Note: FamilyFunTwinCities.com is an independent website run by Twin Cities families for Twin Cities families. We attempt to include the information we find most essential as parents. We make every effort to keep up with changes. However, we are not employed by or connected to this venue, and information sometimes changes without our knowledge. We recommend calling or checking the venue’s website for up-to-date information.
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