1m elevation contours based off a composite bare-earth LIDAR DEM of Wellington Region, New Zealand, 2020. Area of 50k topo sheet BP31 (Porirua).Base DEM is the 2013 WAGGIS LIDAR regional DEM, reprocessed in 2017 by Landcare Research for LINZ.Additional, mainly later, DEMs have been mosaiced in to replace the regional DEM, for this sheet based off data from PCC (2015).Original region-wide 2013 LIDAR data captured at 1.3 points per square metre, to an accuracy of +/- 0.15m (1 sigma) in 2013-2014.Subsequent more localised LIDAR surveys have provided improved strike point densities and accuracies.Vertical datum is NZVD2016. Projection NZTM. Parent DEM cell size 1m.Contours have been smoothed by first applying focal statistics to the parent DEM (3x3 cell, mean), then generalising the resulting contours using the Douglas-Peucker method.

LAYER NAME: Wind zonesABSTRACT : Wind zones used for building rules within Porirua City.SOURCE DATE: July 2005SUPPLIER: Terralink LtdCAPTURE METHOD: This data was converted into a digital format by Terralink Ltd based on consultant model. Where the Wind Zone lines coincided with the property the original DCDB boundary was used.POSITIONAL ACCURACY: Unknown. Indicative in the absence of engineers report.CUSTODIAN/CONTACT: Manager Building ComplianceOWNERSHIP: Porirua City CouncilACCURACY STATEMENT: NOTE: Extremely high category absent.UPDATE FREQUENCY: As requiredCOMMENTS: The wind zone in which a structure is located determines consent structural requirements (New Zealand Building Code - NZBC B1 -Structure) and weather tight requirements (NZBC E2 - External Moisture). This layer relates to NZS3604:1990 Section 2.6 and hence uses AS/NZS 1170.2 wind loads/speed categoriesCOMPLETENESS: Incomplete coverage area.KEYWORDS: NZS3604:1990, Building, Wind, Zoning, Windzones

DESCRIPTION : These are Gazetteered as being public reserves and include, PCC, DOC and WCC etc. owned reserves, but excludes road reserves. SOURCE DATE: Oct 2005 SUPPLIER: Porirua City Council CAPTURE METHOD: Copied from LINZ cadastre and maintained in house POSITIONAL ACCURACY: +/- 2m CUSTODIAN/CONTACT: Porirua City Council, Parks and Reserves Planner OWNERSHIP: Porirua City Council USAGE: Out of sync with AMSUPDATE FREQUENCY: As required COMMENTS: These reserves are public land and excludes many other categories of parcel and road reserves. 100% complete

Orthophotography over Porirua City taken in the flying season (summer period) 2015 -16.

Imagery was captured for the ‘Porirua City Council’ by AAM NZ Limited, 6 Ossian St, NAPIER, New Zealand.

Data has subsequently been provided to LINZ and this comprises: • 249 x ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:1,000 tile layout •Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:1,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.

Imagery supplied as 7.5cm pixel resolution (0.075m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is Generally +/-0.5m GSD (90% Confidence), but worse in hilly areas,

Index tiles for this dataset are available as layer Porirua 0.075m Urban Aerial Photos Index Tiles (2016)

DESCRIPTION : Toilet location within Porirua City SOURCE DATE: Sep 2006 CAPTURE METHOD: Description taken from PCC AMS & Digitized into GIS POSITIONAL ACCURACY: +/- 10m CUSTODIAN/CONTACT: Parks & Reserves Manager OWNERSHIP: Porirua City Council USAGE: No restraint on usage or supply. UPDATE FREQUENCY: As required COMMENTS: 100% Complete. Description points taken from Hansen AMS

LAYER NAME: Sports_groundsABSTRACT : Council maintained sports fieldsSOURCE DATE: Feb 2008SUPPLIER: Porirua City CouncilCAPTURE METHOD: Digitized into GISPOSITIONAL ACCURACY: +/- 2mCUSTODIAN/CONTACT: Parks & Reserves ManagerOWNERSHIP: Porirua City CouncilUSAGE: See our website for ground status http://updates.co.nz/pcc/summer or http://updates.co.nz/pcc/winterUPDATE FREQUENCY: As requiredCOMMENTS: Indicates field markings and usage areas.COMPLETENESS: 100%KEYWORDS: Sports, Grounds, Fields, Leisure, Parks, Recreation, Amenities

Draft Special Amenity Landscapefor Porirua City Council

This layer contains the DEM for LiDAR data from the Wellington region captured between 2013 and 2014. Note that this DEM is based on automated point cloud classification and contains some residual remnants of surface features.

The DSM is available as layer Wellington LiDAR 1m DSM (2013-2014). The index tiles are available as layer Wellington LiDAR Index Tiles (2013-2014). The LAS point cloud is available from OpenTopography.

Lidar was captured for Greater Wellington Regional Council by Aerial Surveys between 2013 and 2014. The datasets were generated by Landcare Research. The survey area includes Wellington, Porirua, Lower Hutt, Upper Hutt, Wairarapa, and Kapiti. Data management and distribution is by Toitū Te Whenua Land Information New Zealand.

Data comprises: •DEM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout •DSM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout •Point cloud: las tiles in NZTM2000 projection, tiled into a 1km x 1km tile layout

Data was collected at >1 pulse/square metre pulse density. Attributes include: -Elevation -Intensity values -Return number -Adjusted GPS time -Classification

Vertical datum is NZVD2016

5m Contours derived from the 2023 1m DEM of the Porirua region. The 1m DEM was generated from LiDAR data that was captured at the request of Porirua City Council by Landpro between 08/01/2023 and 16/04/2023 using the projection NZTM NZGD200 and vertical projection of NZVD16. The dataset was calibrated and classified by Landpro using automated and manual processes from which surface features were removed generating in a 1m bare earth DEM. The DEM provided by Landpro was smoothed by Porirua City's GIS team using a 3x3m grid with a neighborhood moving average prior to running the contour tool. Any contours less than 5m in length were removed.

1m Contours derived from the 2023 1m DEM for the urban areas. The 1m DEM was generated from LiDAR data that was captured at the request of Porirua City Council by Landpro between 08/01/2023 and 16/04/2023 using the projection NZTM NZGD200 and vertical projection of NZVD16. The dataset was calibrated and classified by Landpro using automated and manual processes from which surface features were removed generating in a 1m bare earth DEM. The DEM provided by Landpro was smoothed by Porirua City's GIS team using a 3x3m grid with a neighborhood moving average prior to running the contour tool. Any contours less than 5m in length were removed. To reduce loading times, contours were clipped using the Pairwise Intersect tool and a 500m fishnet layer.

NAME: Rural Aerials 2012 ABSTRACT : Orthorectified 4 band RGB GeoTIFF Aerial Photos of Porirua Rural District using TopoNZ50 1:5,000 series.SOURCE DATE: Flown10 Dec 2012 to 30 Jan 2013 SUPPLIER: NZAM. CAPTURE METHOD: Flown @1:2,500 using Vexcel colour digital camera at, Pixel Resolution 0.3m POSITIONAL ACCURACY: +/-2m GSD (90 % Confidence) can be worse in hilly areas CUSTODIAN/CONTACT: Porirua City Council GIS TeamUPDATE FREQUENCY: As requested, within urban/rural 3-5 yr maintenance programme USAGE: Zoom up to 1:500 COMPLETENESS: 100% urban and rural areaNOTE: Imagery was captured for the Greater Wellington Regional Council by NZ Aerial Mapping Ltd, 208 Warren Street, PO Box 6, Hastings 4156, New Zealand. Company now wound up.Index tiles for this dataset are available as layer Greater Wellington 0.3m Rural Aerial Photos Index Tiles (2012-2013).

The occurrence of earthquakes in the Wellington Region is inevitable due to its location at the boundary of two crustal plates. Earthquakes have the potential to cause significant adverse effects within the Region, including loss of life, injury, and social and economic disruption. This data shows the levels of liquefaction risk for the region based on pre-existing datasets. Liquefaction risk is related to the type of soils present. This data shows the locations of soils that have a siginificnt risk of liquefaction occuring and the level of that risk for the entire region. This data is based on exisitng geological maps published by GNS and similar investigations. This limits the usale scales of the data to between 1:50,000 and 1:250,000. Use at larger scales requires more detailed investigations first.This data is best used in conjunction with the report from GNS refered to below. It is available to download from the GNS website.Dellow, G.D.; Perrin, N.D.; Ries, W.F. 2018 Liquefaction hazard in the Wellington region. Lower Hutt, N.Z.: GNS Science. GNS Science report 2014/16. 71 p.; doi:10.21420/G28S8J