1. Notwithstanding the limitations of sections 242.280 and 242.290 or any tax levy limitation contained in this chapter, the board of supervisors, having levied a tax pursuant to section 242.502, may levy a new tax and, if necessary, issue additional bonds whenever it is found necessary by the board of supervisors to pay the cost of replacing, repairing and reconstructing the drainage works and improvements called for and completed pursuant to the supplemental plan for reclamation adopted by the board of supervisors. Any tax levied pursuant to this section shall be apportioned to and levied on each tract of land or property in said district in proportion to the readjusted assessed benefits. The tax authorized by this section shall be levied in the manner provided by sections 242.450 and 242.460.

2. The additional bonds authorized in paragraph 1 of this section shall be issued pursuant to and in accordance with the provisions of sections 242.480 and 242.485, provided that the additional bonds do not exceed ninety percent of the amount of new taxes levied pursuant to this section.