Maryland Code, Natural Resources § 8-404

(1) Trout streams and wetland areas;

(2) Spawning and propagation areas;

(3) Streams and rivers with scenic and aesthetic value of statewide significance;

(4) Existing or proposed public land adjacent to the rivers and streams;

(5) Sections of any river or stream where no development exists on either side of the river or stream for a distance of one-quarter mile from the mean high water line of the river or stream;

(6) Sections of any river or stream where limited development exists but is compatible with the wise use of the resources;

(7) Sections of any river or stream where encroachment is imminent and would lead to degradation of the river or stream, to some form of pollution, or adversely affect the intent of this subtitle; or

(8) Sections of any river or stream that are important as food production areas, areas supporting migratory waterfowl, and spawning areas for shellfish.