1. The legislative body, or county commission, of each county or city creating a port authority or any port authority created within said city pursuant to section 68.010 hereof shall designate what areas within such county or city shall comprise one or more port districts, subject to the limitation that any area designated as within a port district shall be or could be reasonably connected to the business of a port. The boundaries of any port district shall be filed with the clerk of the county commission, city clerk, or clerk of the legislative or governing body of the county as applicable and shall become effective upon approval of the transportation commission. The legislative body or county commission may from time to time enlarge or reduce the area comprising any port district. Any change of boundaries shall be submitted for approval to the highways and transportation commission and upon approval shall be filed with the appropriate clerk and thereupon become effective.

2. The legislative body or county commission of any county or city authorized to create a local port authority may appropriate, allocate and expend such funds of the county or city for the planning and development of a port district as are reasonable and necessary to carry out the provisions of this chapter.