30.65.230 Floodways: prohibited uses.
(1) The following uses/development are prohibited in the floodway:
(a) Any structure, including mobile homes designed for, or to be used for, human habitation of a permanent nature (including temporary dwellings authorized by SCC 30.22.130 except as provided by SCC 30.65.220(7) and (8)).
(b) All encroachments, including fill, new construction, and other development unless certification by a registered professional engineer is provided demonstrating through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed encroachment will not result in any increase in flood levels during the occurrence of the base flood discharge.
(c) The construction or storage of any object subject to flotation or movement during flood level periods;
(d) The following uses, due to their high degree of incompatibility with the purpose of establishing and maintaining a functional floodway are specifically prohibited:
(i) The filling of marshlands;
(ii) Solid waste landfills, dumps, junkyards, outdoor storage of vehicles and/or materials;
(iii) Damming or relocation of any watercourse that will result in any downstream increase in flood levels during the occurrence of the base flood discharge; and
(iv) Critical facilities as defined in this title.
(2) The listing of prohibited uses in this section shall not be construed to alter the general rule of statutory construction that any use not permitted is prohibited. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003; Amended by Amended Ord. 07-005, Feb. 21, 2007, Eff date Mar. 4, 2007; Amended by Ord. 20-076, Nov. 4, 2020, Eff date Nov. 27, 2020).