This Plan is operative within the coastal marine area of the Wellington Region. The outer or seaward boundary is the outer boundary of the Wellington Region as defined in SO35951. The inner or landward boundary is the line of mean high water springs, except where that line crosses a river, in which case the boundary is the lesser of:

• one kilometre upstream from the mouth of the river; or
• the point upstream that is calculated by multiplying the width of the river mouth by 5.

The locations of river mouths in the Wellington Region are listed in Appendix 1. Appendix 1 also contains a description of the coastal  marine area boundary and maps for the major rivers. Planning Map 1 in Appendix 7 shows the coastal marine area of the Wellington
Region.