(A) The delineation of the identified special flood hazard area may be revised by the city where natural or man-made changes have occurred and/or more detailed studies conducted or undertaken by the U.S. Army Corps of Engineers, a River Basin Commission or other qualified agency or individual document the necessity for such changes. However, prior to any such change, approval must be obtained from the Federal Emergency Management Agency.
(B) A city’s base flood elevations may increase or decrease resulting from physical changes affecting flooding conditions. As soon as practical but, not later than six months from the date such information becomes available, the city shall notify FEMA of the changes by submitting technical or scientific data.
(C) The city may identify and regulate new flood hazard or ponding areas. These areas shall be delineated on a local flood hazard map using best available topographic data and locally derived information such as flood of record, historic high water marks and/or approximate study methodologies.
(Ord. 280, passed 3-4-2021)