Miss. Code Ann. § 59-7-517: Miss. Code Ann. § 59-7-517

Any county issuing revenue bonds under the provisions of this article is hereby authorized by contract or otherwise to provide for the operation and maintenance of facilities provided through the special project for which such bonds are issued and to establish the rates, fees and charges to be paid by users of such port and/or harbor facilities and shall provide for a revision of such rates, fees and charges from time to time as may be necessary to assure the sufficiency of funds to meet the covenants and pledges made in the resolution pursuant to which such bonds were issued.