Notice Not affiliated with the Master Mariners Benevolent Association (MMBA) or any successor organization. v.2026.05
General Overview
Facility 🛶 Small Dock Est. Slips ~25 Water Lake Lot Size Small (<50) Lot Type Unpaved Confidence High

Small dock with multiple piers hosting boats along a lake edge, accompanied by a minimal unpaved parking area with no visible vehicles or striping.

Aerial view of Cowan Lake Marina
Great Lakes

Cowan Lake Marina

Clinton County, OH

Cowan Lake Marina is situated in Clinton County, Ohio, on the shores of Cowan Lake, a man-made reservoir in the scenic, rolling hills of southwestern Ohio, which is part of the Ohio River watershed and not connected to the Great Lakes. It serves recreational boating enthusiasts, including those engaging in sailing and powerboating on the lake's inland freshwater environment. This marina caters to activities in a peaceful, rural setting ideal for day trips and leisure outings on the water.

Location Clinton County, Clinton County, Ohio
Capacity ~25 slips
Coordinates 39.3854, -83.9167

Nearby Marinas in Ohio

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.