Part 4 – Stormwater Drainage
4.4 Definitions
Should a definition be in conflict with the definitions in the District Plan, then the District Plan shall prevail.
| Design Level of Service | Council’s design for capacity (expressed as an average Storm return period) for the stormwater reticulation and this is dependant on the zoning of land serviced by the reticulation. |
| Groundwater Drainage | Any subsoil drainage system as designed by respective landowners. Subsoil drainage systems are permitted to discharge into land drainage systems provided they prevent any transport of fine sediment. Ground water drainage systems remain the responsibility of the landowners. |
| Infill Development | Redevelopment of urban land through either subdivision/development or Building Consent. |
| Land Drainage System | The flow of stormwater and groundwater but concentrates mainly on peak surface discharges and their reticulation under urban conditions. |
| Primary Design Flow | The estimated run-off selected to provide a reasonable degree of protection to the surrounding land. In most cases this flow will be piped or contained within relatively narrow confines under public control by means of a reserve or easement. |
| Secondary Flow Path | The path taken by run-off in excess of the primary drainage system capacity. It shall be capable of producing protection for a once in a 100 years return period rain event for commercial, industrial and habitable residential floor levels with allowable freeboard of 500 mm. |
| Pre Development | The state of a site before any works, permitted or as part of a resource consent, have been undertaken. |
