Md. Code Ann., Nat. Res. § 4-503

A person may not place, throw, or make use of any dynamite or other explosive substance in any water in the State, except for engineering, milling, or mining purposes. Any person who violates this section is guilty of a misdemeanor and upon conviction is subject to a fine not exceeding $300 or imprisonment not exceeding three years, or both, with costs imposed in the discretion of the court.