(A) Areas designated as floodways or nonencroachment areas are located within the special flood hazard areas established in § 152.07. The floodways and nonencroachment areas are extremely hazardous areas due to the velocity of flood waters that have erosion potential and carry debris and potential projectiles.
(1) No encroachments, including fill, new construction, substantial improvements and other developments shall be permitted unless:
(a) It is demonstrated that the proposed encroachment would not result in any increase in the flood levels during the occurrence of the base flood, based on hydrologic and hydraulic analyses performed in accordance with standard engineering practice and presented to the Floodplain Administrator prior to issuance of floodplain development permit; or
(b) A conditional letter of map revision (CLOMR) has been approved by FEMA. A letter of map revision (LOMR) must also be obtained upon completion of the proposed encroachment.
(2) If § 152.44(A) is satisfied, all development shall comply with all applicable flood hazard reduction provisions of this chapter.
(3) No manufactured homes shall be permitted, except replacement manufactured homes in an existing manufactured home park or subdivision, provided the following provisions are met:
(a) The anchoring and the elevation standards of § 152.41(C); and
(b) The no encroachment standard of § 152.44(A).
(Ord. passed 11-18-2008)