Where an adequate public storm main is available at the plat boundary, the subdivider shall construct a storm sewerage system and connect with such storm-sewerage main. If such storm sewerage systems are not accessible, drainage channels with easements of adequate width shall be provided, as determined by the City Planning Commission.
Paved gutters or storm sewers shall be required if velocity of flow are greater than specified by the City Engineer, or if they cause destructive erosion. Storm drainage, including drain tile around basements, shall not be permitted to discharge into any sanitary sewerage facility.