Stanmore Bay Catchment Management Plan

The Stanmore Bay Catchment covers an area of 474 ha, and is located at the western end of Whangaparaoa Peninsula. Stanmore Bay is bounded by the Hauraki Gulf coast to the east, and the Weiti River to the west.

The study catchment discharges into Stanmore Bay via three main watercourses: Vipond stream, Stanmore Stream and Brightside Stream/Drain. These streams have catchments of approximately 160 ha, 200 ha and 100 ha respectively, and drain towards a single outlet at the north east of the catchment.

The Purpose of this Plan
A number of stormwater related issues have been identified in the catchment, relating to both stormwater quality and quantity, and the effects of the potential intensification of the catchment on the environment.

The key issue for Stanmore Bay currently is flooding, and a number of options have been investigated in order to reduce the risk of flooding. Rules for new development and intensification also focus on avoidance of flooding exacerbation, along with stormwater quality management.

Stanmore Bay Integrated Catchment Management Plan (ICMP) and Network Management Plan (NMP)
Section 1 to Section 2 Introduction Catchment description Catchment modelling	(1085k)
Section 3 to Section 6 Catchment modelling Assessment of environmental effects Catchment issues Objectives	(533k)
Section 7 to Section 7.2.2 Stormwater management options	(1846k)
Section 7.2.3 to Section 7.11 Stormwater management options	(959k)
Section 8 to Section 11 Options evaluation Consultation Recommendations and management plan References	(274k)

Stanmore Bay ICMP and NMP Figures
Figure 2-3: Catchment Location	(295k)
Figure 2-4: Subcatchments, Watercourses and Diversion Structures	(249k)
Figure 2-5: Piped Stormwater System	(340k)
Figure 2-6 Catchment Streams - Stream Categories and Types	(292k)
Figure 2-7: Modelled Flooding Issues	(286k)
Figure 2-8: Future Land Use in Stanmore Bay	(275k)
Figure 2-9: Stormwater Treatment Devices	(309k)
Figure 2-10: Wastewater Services	(164k)
Figure 2-11: Water Supply Services	(232k)
Figure 3-1: Modelled Stormwater Quantity Issues	(232k)
Figure 4.1: Stream Categories and Types	(292k)
Figure 4.2: Flood Hazard Map	(507k)
Figure 5.1a: Questionnaire Responses: Habitate Floor and Garage Flooding	(246k)
Figure 5.1b: Questionnaire Responses: All Reported Problems	(259k)
Figure 10.1: Proposed Work	(248k)
Appendices
Appendix C: Hydrological and Hydraulic Modelling	(175k)