Manmade swales and ditches shall meet the following minimum standards. Ditches and culverts may be used in lieu of storm sewers if curbs and gutters are not required. Ditches shall meet the following minimum standards:
(A) Minimum grade of 2.0%.
(B) Maximum grade of 10%.
(C) Minimum depth of 24 inches below the shoulder of the street.
(D) Maximum bank slope of 3:1 under normal conditions.
(E) The bottom and banks of ditches with grades between 4% and 8% shall be sodded and equipped with permanent ditch checks.
(F) The bottom and banks of ditches with grades between 8% and 10% shall be paved or otherwise stabilized as approved by the Village Engineer.
(G) Whenever practicable, all areas of the property must be provided an overland flow path that will pass the 100-year flow at a stage at least one foot below foundation grades in the vicinity of the flow path. Overland flow paths designed for flows in excess of the minor drainage system capacity shall be provided in drainage easements. Street ponding and flow depths shall not exceed curb heights.
(Ord. 04-02, § 158.024, passed 4-5-04)