Maryland Code, Natural Resources § 10-604

(a) A person may hunt wild waterfowl while standing in water on the natural bottom only in the waters of the Susquehanna Flats, the nontidal waters of the Potomac River, the waters of Tangier Sound, Fishing Bay, Monie Bay, Manokin River, Big Annemessex River, Pocomoke Sound, and Kedges Straits in the waters of Dorchester, Somerset, and Wicomico counties, and in other waters of the State in areas and on days the Department prescribes by regulation.

(b) A person may hunt wild waterfowl while standing in water on the natural bottom at a licensed offshore stationary blind or blind site.

(c) A person hunting wild waterfowl while standing in water on the natural bottom shall remain at least 250 yards from all offshore stationary blinds or blind sites or another person hunting wild waterfowl offshore.

(e) A person may not hunt wild waterfowl while standing in State waters on the natural bottom when the natural bottom is privately owned, unless the hunter has the written permission of the landowner.

(f) Except at a licensed stationary blind or blind site, a nonresident may not hunt wild waterfowl while standing in water on the natural bottom unless accompanied by a Maryland resident.