(a) All requests to revise or change the flood hazard data, including requests for a Letter of Map Revision and a Conditional Letter of Map Revision, shall be reviewed by the floodplain administrator and/or designated staff.
(1) The floodplain administrator shall not sign the community acknowledgment form for any requests based on filling or other development, unless the applicant for the letter documents that such filling or development is in compliance with this chapter.
(2) The floodplain administrator shall not approve a request to revise or change a floodway delineation until FEMA has issued a Conditional Letter of Map Revision that approves the change.
(b) If an applicant disagrees with the regulatory data prescribed by this section, they may submit a detailed technical study needed to replace existing data with better data in accordance with FEMA mapping guidelines. If the data in question are shown on the published FIRM, the submittal must also include a request to FEMA for a Letter of Map Revision to correct the flood risk in the area based on existing conditions.
(c) Where base flood elevation data are not available in accordance with this section, applicants for approval of new subdivisions and other proposed developments (including proposals for manufactured home parks and subdivisions) greater than 50 lots or five acres, whichever is the lesser, shall include such data when submitting for their permit.
(d) Where floodway delineation is not available in accordance with this section, the floodway will be designated to be one-half the distance of the mapped 100-year floodplain at any point, and the prohibition on floodway development adheres, unless a floodway study indicates otherwise. This provision applies to any floodplain development permit, including those for substantial improvements.
(e) The floodplain administrator and/or designated staff shall use the most restrictive data available for the channel migration zone, floodways, and future conditions.
(Ord. 77-21, passed 7-6-2021)