Ala. Code § 33-1-11
The jurisdiction of the port authority in any harbor or seaport within the state shall extend over the waters and shores of a harbor and shall extend to the outer edge of the outer bar at the harbor or seaport. The jurisdiction of the port authority shall also extend over the waters and shores of all rivers and streams within the state which are navigable for commercial traffic, or which may be made so navigable at any time in the future. The jurisdiction of the port authority shall not be exclusive, however, and nothing contained herein shall be taken as a deprivation of the power of the Department of Conservation and Natural Resources to control, hold, lease, manage, or own the minerals, sands, gravel, or any other natural resources in the beds of navigable streams or other public waters as provided by law.
Ala. Code § 33-1-11 (1975)