(a) Before adopting a budget, the managers shall hold a public hearing on the proposed budget.
(b) The managers shall publish a notice of the hearing with a summary of the proposed budget in one or more newspapers of general circulation in each county consisting of part of the watershed district. The notice and summary shall be published once each week for two successive weeks before the hearing. The last publication shall be at least two days before the hearing.
On or before September 15 of each year, the managers shall adopt a budget for the next year and decide on the total amount necessary to be raised from ad valorem tax levies to meet the watershed district's budget.