Idaho Code § 70-1511
Port districts may acquire, by gift or for consideration, individually or with other port districts or municipal corporations or instrumentalities of this state, surplus United States property, and/or other property of the United States or any other public body made available for such acquisition, and may hold and use the same for all lawful port purposes, subject to applicable federal laws and regulations appertaining thereto. Such property may be so acquired and used whenever the port commission finds the acquisition and/or use thereof to be to the present or future benefit of the port district, and whether or not the acquisition and/or use thereof is contemplated within the port district's comprehensive plan of harbor improvement and port development.
Idaho Code § 70-1511