Marquis Basin Boat Ramp offers two concrete launching lanes with courtesy docks, making it suitable for both motorboats and hand-launching kayaks and canoes.

The facility includes parking for approximately 15 boat trailers, picnic tables, and porta-potties, with operating hours from 7 am to 10 pm (though it's also open 24 hours for fishing).

Located at the northeast end of Blackwater Bay in Milton, this Santa Rosa County ramp provides good access to the bay system with no launch fee.