A.
Encroachment in floodways. Development, land disturbing activity, and encroachments in floodways shall not be authorized unless it is demonstrated through hydrologic and hydraulic analyses required in accordance with § 135-9.1D of these regulations, that the proposed encroachment will not result in any increase in the base flood level during occurrence of the base flood discharge.
B.
Limitations on placement of fill. Subject to the limitations of these
regulations, fill shall be designed to be stable under conditions
of flooding, including rapid rise and rapid drawdown of floodwater,
prolonged inundation, and protection against flood-related erosion
and scour. In addition to these requirements, when intended to support
buildings and structures (Zone A only), fill shall comply with the
requirements of the Building Code.
