The city council shall take into account flood hazards, to the extent that they are known in all official actions related to land management, use, and development.
(A) New subdivisions, manufactured home parks, annexation agreements, and planned unit developments (PUDs) within the floodplain shall be reviewed to assure that the proposed developments are consistent with §§ 151.31 through 151.34 and the need to minimize flood damage. Plats or plans for new subdivisions, mobile home parks, and planned unit developments (PUDs) shall include a signed statement by a certified professional engineer that the plat or plans account for changes in the drainage of surface waters in accordance with ILCS Ch. 765, Act 205, § 2 (the Plat Act).
(B) Proposals for new subdivisions, manufactured home parks, travel trailer parks, planned unit developments (PUD's), and additions to manufactured home parks and additions to subdivisions shall include base flood or 100-year frequency flood elevation data and floodway delineations. Where this information is not available from an existing study filed with the Illinois State Water Survey, the applicant's engineer shall be responsible for calculating the base flood or 100-year frequency flood elevation per § 151.30(D) and the floodway delineation per the definition of, § 151.03 and submitting it to the State Water Survey and IDNR for review and approval as best available regulatory data.
(C) Streets, block, lots, parks, and other public grounds shall be located and laid out in such a manner as to preserve and utilize natural streams and channels. Whenever possible, the floodplains shall be included within parks or other public grounds.
(D) The city council shall not approve any planned unit development (PUD) or plat of subdivision located outside the corporate limits unless such agreement or plat is in accordance with the provisions of this chapter.
(E) No critical facility shall be allowed in the floodplain. Critical facilities are defined as:
(1) Buildings or facilities that produce, use, or store highly volatile, flammable, explosive, toxic, and/or water reactive materials;
(2) Hospitals, nursing homes, and housing likely to contain occupants who may not be sufficiently mobile to avoid death or injury during a flood;
(3) Police stations, fire stations, vehicle and equipment storage facilities, and emergency operations centers that are needed for flood response activities before, during, and after a flood;
(4) Public and private utility facilities that are vital to maintaining or restoring normal services to flooded areas before, during, and after a flood.
(Ord. O-14-03, passed 2-18-03; amend. Ord. O-16-19, passed 10-15-19)