Md. Code, Local Government § 20–608

(a) By ordinance, a municipality may impose a user fee on charges for the

docking and storage of boats.

(b) (1) Subject to paragraph (2) of this subsection, a municipality shall

set the rate of the user fee.

(2) The rate of the user fee may not exceed 5% of the rental charges

for the docking and storage of boats.

(c) The total amount of user fees charged per boat slip under this section

may not exceed $100 annually.

(d) A municipality shall use any revenue from the user fee authorized under

this section:

(1) to maintain and enhance:

(i) water quality;

(ii) water and wastewater treatment facilities;

(iii) marinas;

(iv) law enforcement;

(v) public safety; or

(vi) fire services; or

(2) for land acquisition and the related construction and

maintenance of public facilities to enhance public use and water access.