65 ILCS 5/11-112-1
When a vote has been taken under "An Act to enable cities, villages and towns threatened with overflow or inundation to levy taxes by vote of the electors thereof, to strengthen, build, raise or repair the levees around same and to issue anticipation warrants on such taxes," approved June 11, 1897, as amended, or when a vote is taken under this section and Section 11-112-2 at a general municipal election in a municipality that is protected by levees or embankments, or that may deem it necessary to be so protected, and a majority of the legal votes cast at the election were or are for a tax to build, raise, strengthen, or repair the levees around the municipality, not exceeding the rate of .1666% annually, to be levied annually for a period of not exceeding 7 years on the taxable property of the municipality, the corporate authorities of the municipality may (1) make an appropriation by ordinance of the proceeds of the tax so authorized, (2) pass an ordinance levying the tax for the whole period as authorized by the vote to be annually extended, and (3) draw tax anticipation warrants thereon to the amount that the tax levy will produce based on the assessment of the preceding year of all the taxable property of the municipality. These warrants shall draw interest at not to exceed the rate authorized by the vote authorizing the tax, not exceeding 7% annually, but the warrants shall not be sold below par.
The foregoing limitation upon tax rate may be increased or decreased according to the referendum provisions of the General Revenue Law of Illinois.
65 ILCS 5/11-112-1