425.100 Floodways.
Located within areas of special flood hazard established in Section 425.040(B) are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of floodwaters which carry debris, potential projectiles, and erosion potential, the following provisions apply:
A. Prohibit encroachments, including fill, new construction, substantial improvements, and other development unless certification by a registered professional civil engineer is provided demonstrating through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that encroachments shall not result in any increase in base flood or floodway elevations when compared to pre-project conditions.
B. If subsection (A) of this section is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of Section 425.070, Provisions for Flood Hazard Reduction, or ASCE 24, whichever is more stringent. (Ord. 2-2018 § 2 (Att. B))