About This Beach
Quick Facts
• Location: William O’Brien State Park, Marine on St. Croix, Minnesota
• Address: 16821 O’Brien Trail N, Marine on St Croix, MN 55047
• Beach Type: Freshwater lake beach
• Sand Type: Sandy shoreline
• Water Conditions: Calm, shallow, designated swim area
• Best For: Families, swimming, camping, nature
• Best Time to Visit: June–August; midday for warmest water
• Beach Hours: Sunrise to sunset
• Pet Policy: Dogs allowed on leash (not in swim areas)
• Beach Cleanliness: Very well maintained
• Average Rating: ⭐ 4.7
• Pricing: State park entry fee required
• Parking: On-site parking available
• Accessibility: Good
• Crowd Level: Low to moderate
Overview
William O’Brien State Park Beach offers a peaceful and family-friendly lake experience near the St. Croix River. It’s a great spot for swimming, camping, and enjoying a quiet natural setting.
Amenities & Access
• Restrooms and changing areas
• Picnic areas
• Campground nearby
• Easy access from parking
Safety & Conditions
• Calm designated swim area
• No lifeguards
• Clean and safe water
• Family-friendly
Tip: Ideal for combining beach time with hiking and river exploration.
Things to Do
• Swimming
• Camping
• Hiking
• Fishing
• Picnicking
Nearby Attractions
• St. Croix River
• Marine on St. Croix village
• Scenic river valley
Where to Stay
• State park campground
• Nearby inns and cabins
• Twin Cities accommodations
Tips & Rules
• State park permit required
• No pets in swim area
• Bring supplies
• Follow park rules
Best Time to Visit
• Summer for swimming
• Fall for scenic foliage
• Weekdays for quiet
Who It’s Best For
• Families
• Campers
• Nature lovers
Bottom Line
William O’Brien State Park Beach offers a clean and relaxing lake experience with easy access to nature and outdoor recreation.
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