70 ILCS 1820/31

(70 ILCS 1820/31) (from Ch. 19, par. 881) Sec. 31. Territory which is contiguous to the District and which is not included within any other port district may be annexed to and become a part of the District in the manner provided in Section 32 or 33 whichever may be applicable. (Source: P.A. 79-1475.)