William O'Brien State Park
William O'Brien State Park is a public boat ramp in Marine On Saint Croix, MN on St. Croix River. William O'Brien State Park is a public boat ramp on St. Croix River located near Marine On Saint Croix, Minnesota. Open to the public.
Ramp details
- Address: Marine On Saint Croix, MN
- GPS coordinates: 45.21724, -92.75920
- Water body: St. Croix River
- Ramp type: concrete
- Launch fee: free to launch
- Amenities: Boat Launch, Public Access