Md. Code, Natural Resources § 8–703.3

(a) This section applies to a vessel that is operated in a lake that is owned or managed by the State.

(b) After April 1, 2017, an owner of a vessel may not place the vessel or have the vessel placed in a lake at a public launch ramp or public dock unless the owner has cleaned the vessel and removed all visible organic material.

(c) An owner of a vessel who violates this section is subject to a civil penalty not exceeding:

(1) $100 for a first violation;

(2) $250 for a second violation; and

(3) $500 for a third or subsequent violation.