Notice Not affiliated with the Master Mariners Benevolent Association (MMBA) or any successor organization. v.2026.05
General Overview
Facility 🚤 Full Service Marina Est. Slips ~80 Water Ocean/Bay Est. Parking ~60 spaces Lot Size Medium (50–150) Lot Type Surface Confidence High

Well-organized marina with multiple parallel docks extending into a bay, surrounded by a medium-sized unpaved parking area with no visible vehicles.

Aerial view of Afton Marina
Great Lakes

Afton Marina

Afton, MN

Afton Marina is located in Afton, Minnesota, along the scenic St. Croix River, which forms the border between Minnesota and Wisconsin and is part of the St. Croix National Scenic Riverway, rather than the Great Lakes. It serves recreational boating and sailing on the St. Croix River, providing access to this popular waterway for activities such as day trips and fishing in a region known for its natural beauty and proximity to the Twin Cities metropolitan area.

Location Afton, Washington County, Minnesota
Capacity ~80 slips
Coordinates 44.9041, -92.7776

Nearby Marinas in Minnesota

Marina Parking & Access Control

Marinas typically need to separate slip holder parking from day-visitor parking, trailer areas, launch ramps, and secure dock access points. Modern facilities use barrier gate systems to enforce these zones automatically — allowing permitted vehicles through via transponder or keycard while logging all access events.