§ 6-4011. General provisions.

A.

No construction or improvement within the floodplain management district shall obstruct or unduly restrict any channel, whether or not such channel lies within a designated floodway.

B.

Watercourses shall not be altered or relocated except upon the presentation of data, certified by a licensed engineer, that the flood-carrying capacity of such a modified watercourse will be at least equal to that prior to modification. Evidence of all necessary permits or approvals for the Federal Insurance Administrator, the U.S. Army Corps of Engineers, the Virginia Marine Resources Commission, and the Virginia Department Environmental Quality shall be required prior to such modification.

C.

The floodplain administrator shall notify adjacent localities of watercourse alterations or relocations.

D.

Adequate drainage shall be provided to reduce exposure to flood hazards. All storm drainage facilities shall be designed to convey the flow of surface waters away from buildings and on-site waste disposal sites and prevent the discharge of excess runoff onto adjacent properties in order to avoid damage to persons or property. (11-19-15; 7-19-18.)