Notice Not affiliated with the Master Mariners Benevolent Association (MMBA) or any successor organization. v.2026.05
General Overview
Water Lake Est. Parking ~75 spaces Lot Size Medium (50–150) Lot Type Surface (Striped) Confidence Medium

Urban area with multiple striped surface parking lots adjacent to buildings and a small lake, but no visible docks, slips, or marine facilities.

Aerial view of Windmill Marina
Great Lakes

Windmill Marina

Afton, MN

Windmill Marina is situated in Afton, Minnesota, along the scenic St. Croix River, which forms the border between Minnesota and Wisconsin in the Upper Midwest, rather than directly on the Great Lakes; this river is a tributary of the Mississippi River. It serves recreational boaters and sailors who navigate the calm, freshwater environments of the St. Croix River for activities like cruising and fishing. This location in the St. Croix Valley offers access to the region's natural beauty, including forested banks and nearby waterways for leisurely boating excursions.

Location Afton, Washington County, Minnesota
Coordinates 44.9008, -92.7798

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.