(A) Encroachments due to development may not allow stage increases more than one-half foot at any point, unless through a map revision following the procedures in §§ 151.120(E), 151.150 and 151.151. This evaluation must include the cumulative effects of previous encroachments, and must be documented with hydrologic and hydraulic analysis performed by a professional engineer, or using other standard engineering practices. A lesser water surface elevation increase than one-half foot is required if, due to the water surface level increase, increased flood damages would potentially result.
(B) Alterations or changes that result in stage decreases are allowed and encouraged.
(Ord. 607, passed 7-8-2024)