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 Bay Est. Parking ~30 spaces Lot Size Small (<50) Lot Type Surface Confidence High

Medium-sized marina with covered slips arranged in a U-shape around a central basin, adjacent to a road with a small unpaved parking area and minimal vehicles visible.

Aerial view of Decatur Harbor
inland waterway

Decatur Harbor

Limestone County, AL

Decatur Harbor is located in Limestone County, Alabama, along the Tennessee River, a major inland waterway that winds through northern Alabama and connects to the broader Tennessee-Tombigbee Waterway system. This marina serves recreational boating and fishing on the river's calm, freshwater stretches, catering to enthusiasts exploring the scenic landscapes of the Tennessee Valley region. The area's geographic setting features a blend of riverine environments and nearby urban influences from the city of Decatur.

Location Limestone County, Limestone County, Alabama
Capacity ~60 slips
Coordinates 34.6168, -86.9712

Nearby Marinas in Alabama

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.