(65 ILCS 5/11-111-1) (from Ch. 24, par. 11-111-1)
    Sec. 11-111-1. Every city or village, whether incorporated under the general law or under a special charter, whose site is wholly or partially subject to overflow and wholly or partially surrounded by levees, dykes, or embankments to prevent overflow: (1) may divide the municipality, or any part thereof, into improvement districts, (2) may fix the grade of the streets, avenues, alleys, or public grounds within the improvement districts, at any height deemed necessary to give a surface drainage from each improvement district to the river or rivers which cause the overflow, and (3) may require low lots, blocks, or parts thereof, within an improvement district to be filled in such manner as to prevent water from standing thereon and thus to prevent them from becoming a nuisance or injurious to the public health, in the judgment of the corporate authorities of the municipality.
    The work authorized to be done by Sections 11-111-1 through 11-111-7 shall be done by special assessment or special taxation of contiguous property. Every city or village exercising the power granted by these sections has the same power in relation to special assessments or special taxation as is granted to any city, village, or drainage or improvement district in this state.
(Source: Laws 1961, p. 576.)