Scott Point Catchment Management Plan

Working collaboratively with the Auckland Council Stormwater Unit (SWU), a Stormwater Management Plan (SMP) has been completed for the Scott Point Peninsula. The land development will be a mixture of residential housing with an average lot size of 300m2 . The Scott Point SMP is the first plan to be submitted and assessed under the Proposed Auckland Unitary Plan (PAUP). The SMP is based on integrated land development incorporating onsite water sensitive design as a core development approach.

The Scott Point Peninsula is surrounded by a sensitive coastal receiving environment (Appendix 1). Onsite stormwater management within private lots and road reserves will achieve the outcomes sought by the Stormwater Management Flow and Water Quality Rules. This approach delivers a unique stormwater management response with a significant shift from traditional end of pipe treatment systems by removing 10 out of 12 originally proposed communal wetlands. A tool box of best practicable options is presented to treat not only suspended sediments but also heavy metals and reduce water temperature at source.

Working in partnership with the Auckland Council SWU was crucial in order to deliver a design outcome strongly aligned to the new water quality targets and overall urban design vision.

This paper will outline how the first SMP in Auckland under the new PAUP was completed using a range of best practicable options to protect the receiving environment. Adopting a collaborative working model with the SWU was critically important helping immensely for Council and Client alike to navigate and interpret the new rules in the absence of final supporting technical guidance. The Scott Point SMP is a test case for the implementation of the PAUP to ensure the flow and new treatment targets are achieved for new greenfield development.