Iowa Code Title XI. Natural Resources [Chs. 455-485] § 468.551. Resolution required

All bonds issued under the provisions of this part shall be issued pursuant to and in conformity with a resolution adopted by the board of supervisors which shall specify the amount of unpaid assessments to be extended, the times when the installment or installments of extended assessments shall become due, the amount of drainage refunding bonds authorized to be issued, the purpose for which issued, the rate of interest they shall bear, the place where the principal and interest shall be payable and the time or times when they shall become due, and such other provisions not inconsistent with law in reference thereto, as the board shall deem proper.