Ala. Code § 33-7-3.1: Obstructing Navigation on Public Waters.

(a) Any person who anchors, moors, or abandons a floating pier, barge, or vessel or sunken or submerged pier, barge, or vessel that obstructs navigation on a public water, as defined in subsection (a) of Section 9-11-80, shall be fined not less than one hundred dollars ($100) nor more than one thousand dollars ($1,000) per day.

(b) This section does not apply to public waters used primarily for agricultural, industrial, power generation, public water supply, and sanitation purposes.