Chapter 160 – Flood Plain Regulations

7. Watercourse alterations or relocations (channel changes and modifications) must be designed to maintain the flood carrying capacity within the altered or relocated portion. In addition, such alterations or relocations must be approved by the Department of Natural Resources. 8. Any fill allowed in the floodway must be shown to have some beneficial purpose and shall be limited to the minimum amount necessary. 9. Pipeline river or stream crossings shall be buried in the streambed and banks or otherwise sufficiently protected to prevent rupture due to channel degradation and meandering or due to the action of flood flows. 160.10 SPECIAL SHALLOW FLOODING AREAS STANDARDS. In addition to the general flood plain standards, uses within shallow flooding areas must meet the following applicable standards. 1. In shallow flooding areas designated as an AO Zone on the Flood Insurance Rate Map (FIRM), the minimum flood proofing/flood protection elevation shall be equal to the number of feet as specified on the FIRM (or a minimum of 2.0 feet if no number is specified) above the highest natural grade adjacent to the structure. 2. In shallow flooding areas designated as an AH Zone on the Flood Insurance Rate Map, the minimum flood proofing/flood protection elevation shall be equal to the elevation as specified on the FIRM. 160.11 ADMINISTRATION. The Mayor shall implement and administer the provisions of this chapter and will herein be referred to as the Administrator. Duties and responsibilities of the Administrator include, but are not necessarily limited to, the following: 1. Review all flood plain development permit applications to assure that the provisions of this chapter will be satisfied. 2. Review all flood plain development permit applications to assure that all necessary permits have been obtained from Federal, State, and local governmental agencies including approval when required from the Department of Natural Resources for flood plain construction. 3. Record and maintain a record of the elevation (in relation to National Geodetic Vertical Datum) of the lowest floor (including basement) of all new or substantially improved structures. 4. Record and maintain a record of the elevation (in relation to National Geodetic Vertical Datum) to which all new or substantially improved structures have been flood-proofed. 5. Notify adjacent communities and/or counties and the Department of Natural Resources prior to any proposed alteration or relocation of a watercourse and submit evidence of such notifications to the Federal Emergency Management Agency. 6. Keep a record of all permits, appeals and such other transactions and correspondence pertaining to the administration of this chapter. 160.12 FLOOD PLAIN DEVELOPMENT PERMIT REQUIRED. A flood plain development permit issued by the Administrator shall be secured prior to any flood plain development (any manmade change to improved and unimproved real estate, including but not limited to buildings or other structures, mining, filling, grading, paving, excavation or drilling operations) including the placement of factory- built homes. 160.13 APPLICATION FOR PERMIT. Application for a flood plain development permit shall be made on forms supplied by the Administrator and shall include the following information: