Port Mahon Access offers a state-maintained boat ramp on the Mahon River and Kellys Ditch, plus a fishing pier accessible via a short hike over rocks with steps leading to a platform nearly 10 feet above the water.

The 340-acre area features salt marshes, tidal creeks, an observation platform for wildlife viewing, and ample parking, though the pier requires a pier net for fishing and is not recommended for solo visits after dark.