Structures existing in any identified floodplain area prior to the enactment of this chapter may continue subject to the following provisions:
A. 
No expansion or enlargement of an existing structure shall be allowed within any identified floodway that would cause any increase in the one-hundred-year flood heights.
[Amended 12-12-2000 by Ord. No. 9-00]
B. 
Any modification, alteration, reconstruction or improvement of any kind to an existing structure to an extent or amount of 50% or more of its market value shall constitute a substantial improvement and shall be undertaken only in full compliance with the provisions of this chapter.
C. 
Any modification, alteration, reconstruction or improvement of any kind to an existing structure to an extent or amount of less than 50% of its market value shall be elevated and/or floodproofed to the greatest extent possible.
D. 
No expansion or enlargement of an existing structure shall be allowed within any FF (flood-fringe area) that would, together with all other existing and anticipated development, increase the BFE more than one foot at any point.
[Added 3-1-2011 by Ord. No. 1-11]