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 ~60 Water Ocean/Bay Est. Parking ~75 spaces Lot Size Medium (50–150) Lot Type Surface Confidence High

Medium-sized marina with multiple piers packed with boats, adjacent surface parking lot of moderate size with no visible vehicles or access controls.

Aerial view of Little Grassy Marina
Great Lakes

Little Grassy Marina

Williamson County, IL

Little Grassy Marina is located on Little Grassy Lake in southern Illinois, specifically within the Shawnee National Forest in Jackson County, near the town of Makanda, rather than on the Great Lakes as initially stated. This marina serves recreational boating and fishing enthusiasts on the calm waters of this man-made reservoir, which is ideal for small crafts, kayaks, and leisurely sailing in a scenic, forested region far from the expansive Great Lakes system. The area features rolling hills and natural landscapes typical of southern Illinois, providing a peaceful setting for outdoor water activities.

Location Williamson County, Williamson County, Illinois
Capacity ~60 slips
Coordinates 37.6432, -89.1418

Nearby Marinas in Illinois

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.