(A) The subdivider shall provide a surface water drainage system constructed to the standards of the town Storm Water Management Plan, the North Carolina Department of Transportation, and subject to the approval of the Planning Board.
(B) No surface water shall be channeled or directed into a sanitary sewer.
(C) Where feasible, the subdivider shall connect to an existing storm drainage system.
(D) Where an existing storm drainage system cannot feasibly be extended to the subdivision, a surface drainage system shall be designed to protect the proposed development from water damage.
(E) Surface drainage courses shall have side slopes of at least three feet of horizontal distance for each one foot of vertical distance, and courses shall be of sufficient size to accommodate the drainage area without flooding, and designed to comply with the standards and specifications for erosion control of the North Carolina Sedimentation Pollution Control Act.
(F) The minimum grade along the bottom of a surface drainage course shall be a vertical fall of at least one foot in each 200 feet of horizontal distance, or as directed by the Public Works Department.
(G) Streambanks and channels downstream from any land disturbing activity shall be protected from increased degradation by accelerated erosion caused by increased velocity of runoff from the land disturbing activity. (As specified by the North Carolina Sedimentation Pollution Control Act.)
(H) Anyone constructing a dam or impoundment within the subdivision must comply with the North Carolina Dam Safety Law.
(I) In areas of special flood hazards, all subdivision proposals shall have adequate drainage provided to reduce exposure to flood damage.
(Am. Ord. 18-3, passed 6-14-21)
Cross-reference:
Standards for subdivision proposals, see § 151.27