WRC provided the following datasets to Beca which we used to help with amending the modified MHWS dataset:

- Parcel Boundaries

- CMA Boundary

- WRC SIB Schedule

- LINZ Building Outline Inside MHWS

- Coastal Environment Topo50k Coastline NZ Coastlines (Topo, 1:50k) - National Topographic Office | | GIS Data Map Mapping | LINZ Data Service

The following processes were followed to modify the MHWS dataset:

1: All urban areas were a priority to amending the line therefore using zoning datasets for each district the parcels were identified based on a select by location based on residential zoning. By identifying residential parcels, it narrowed down the areas of where the MHWS needed to be amended. The main focus was on urban areas, with whatever time left over, the focus was shifted to amend any rural area boundaries by manually moving around the map and identifying areas and reshaping.

2: Where it was obvious that the MHWS was no longer following the coastline, it was amended to either a visible sea wall, rock wall, grass bank or forest.

3: Where it was either wet land, mangroves, or obvious that it was a marine area and a parcel overlaps this area, the MHWS was left as per the original dataset because this is where property owners will need to be consulted as their property will be affected by the proposed coastal plan.

4: The MHWS dataset was given a new field which identified if the line was modified or not. Where the line was modified, it was split where it needed to be reshaped. Where the line was updated, this was given an attribute of "yes" to help WRC identify where changes have been made.

5: In a workshop with Chris Staite, and Angelina Yung, we went through sites that needed their input and went through spot checks of the modified MHWS dataset to verify the work that has been completed.

6: The MWHS was amended to the boundary of the CMA line because in most cases the MHWS either fall short or over extended the CMA boundary so was updated to follow the CMA boundary.

Coordinate System: NZTM2000