This describes the structural design requirements for drainage systems. It includes details on pipe drains and associated concrete structures.

Additional factors which should be considered during the preparation of the design include:

'As constructed' information for underground pipelines can be difficult to obtain due to the nature of Works involved

Loss coefficient for pits and junctions

​

As regional drainage authority and delegated floodplain manager, we have responsibility to provide a safe, effective system for dealing with run-off.

The Subdivisional Servicing policy describes the general waterway, water quality and drainage works that must be incorporated into servicing of new land developments.

When creating plans of subdivision, you must provide roads, drainage reserves/easements and necessary drainage works.

The use of easements and reserves to protect our assets will be influenced by the type of asset, long term statutory responsibilities, implied rights and required control over use of the land.

This policy describes the scope of planning permit conditions that we request in response to planning applications referred to us under the Planning and Environment Act 1987, and planning schemes.