Naperville Stormwater Runoff Control Drainage Way Ordinance

Naperville requires buildings in the city to possess “[a]n adequate system of storm water runoff control drainage . . . constructed and installed in accordance with the standards and current practices of the City. Compliance must be maintained with the Flood Plain Zoning [6] and Storm Water Runoff Control Ordinances† of the City. All natural water drainageways shall be preserved at their natural gradient unless otherwise determined by the City Engineer. Drainage channels, slopes and swales will be established on the lots by the developer for the convenience of moving surface water to the street or public storm sewer and are to be maintained continuously by the lot owner. No material shall be moved from or placed on any lot which obstructs, retards or changes the direction of water flow through these channels or swales.”