{
 "culture": "en-US",
 "name": "",
 "guid": "",
 "catalogPath": "",
 "snippet": "Composite erosion susceptibility raster combining 50% regolith activity (geological risk) and 50% overland flow or OLF index (runoff risk), scaled to a continuous 1\u20135 index (higher values = higher susceptibility).",
 "description": "<DIV STYLE=\"text-align:Left;\"><DIV><DIV><P STYLE=\"margin:0 0 0 0;\"><SPAN><SPAN>This raster represents a continuous composite susceptibility surface based on two SPAL indicators: MADZ-derived regolith activity (i.e. landscape structural instability indicating geological risk) and the OLF (indicating sediment runoff) index. Equal weighting was applied to both inputs:<\/SPAN><\/SPAN><SPAN /><SPAN /><SPAN><SPAN>Composite Score = 0.5 × Activity + 0.5 × OLF<\/SPAN><\/SPAN><SPAN /><SPAN /><SPAN>The resulting surface was scaled from approximately 1.32 to 4.95 (higher values = higher susceptibility), yielding a continuous measure of erosion susceptibility across the landscape. This supports prioritisation and interpretation at fine spatial resolution.<\/SPAN><\/P><DIV STYLE=\"font-size:12pt\"><P><SPAN>For details see the Land &amp; Water Science report (Gunn and Rissmann 2025) - <\/SPAN><A href=\"https://www.nrc.govt.nz/media/tr4ng33g/northlands-landscape-driven-erosion-map-lws-2025.pdf\" target=\"_blank\" STYLE=\"text-decoration:underline;\"><SPAN>Northland\u2019s Landscape Driven Erosion Map: A Resource for Decision-Makers and Communities<\/SPAN><\/A><\/P><P /><P><SPAN>Author: Dr Clint Rissmann (Land &amp; Water Science)<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Extent: Whole Northland<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Projection: NZTM (EPSG:2193)<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Coarsest Scale of Component Dataset: 1:63,000 resampled to 5m<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Version: Version 2.0<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Date Created: July 2025<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Date Modified: N/A<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>NRC Team (if applicable): Natural Resources Science Team<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Subject Matter Expert: Clint Rissmann \u2013 Landscape Scientist<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>File Size: 1.91 GB<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Raster Metadata Summary:<\/SPAN><\/P><P><SPAN>CRS: NZGD2000 / New Zealand Transverse Mercator (EPSG:2193)<\/SPAN><\/P><P><SPAN>Pixel Size: 5 m × 5 m<\/SPAN><\/P><P><SPAN>Raster Dimensions: 35,661 (width) × 44,551 (height)<\/SPAN><\/P><P><SPAN>Extent: 1567222.5000, 5971572.5000 to 1745527.5000, 6194327.5000<\/SPAN><\/P><P><SPAN>GDAL Driver: GTiff (GeoTIFF)<\/SPAN><\/P><P><SPAN>Compression: LZW<\/SPAN><\/P><P><SPAN>Statistics: Min = 1.3167, Max = 4.9504, Mean = 4.0059, StdDev = 0.1441<\/SPAN><\/P><P><SPAN>Valid Data Coverage: 31.27%<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Data Provided By: Manas Chakraborty (Freshwater Resource Scientist)<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Data Published By: Bhawana Kafle (Geospatial Analyst)<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Published Date: 19/02/2026<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Last Updated By: Jordon Corston (Geospatial Analyst)<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN>Last Update Date: 19/05/2026<\/SPAN><\/P><\/DIV><\/DIV><\/DIV><\/DIV>",
 "summary": "Composite erosion susceptibility raster combining 50% regolith activity (geological risk) and 50% overland flow or OLF index (runoff risk), scaled to a continuous 1\u20135 index (higher values = higher susceptibility).",
 "title": "Northland\u2019s Erosion and Sediment Risk map \u2013 property scale",
 "tags": [
  "Erosion Risk",
  "Susceptibility",
  "Northland",
  "SPAL",
  "NRC",
  "OpenData"
 ],
 "type": "",
 "typeKeywords": [],
 "thumbnail": "",
 "url": "",
 "minScale": 150000000,
 "maxScale": 5000,
 "spatialReference": "",
 "accessInformation": "Land & Water Science; NRC",
 "licenseInfo": "<DIV STYLE=\"text-align:Left;\"><DIV><DIV><DIV STYLE=\"font-size:12pt\"><P><SPAN><SPAN>This continuous susceptibility surface reflects relative composite scores based on weighted inputs. Values are scaled but not classed into discrete categories. Use is intended for sub-catchment to regional landscape interpretation.<\/SPAN><\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;font-size:14pt\">Licencing<\/SPAN><\/P><P><SPAN><SPAN>This dataset was developed by Land &amp; Water Science under agreement with NRC. NRC is licensed to use the product, but Land &amp; Water Science retains intellectual property and full reuse rights.<\/SPAN><\/SPAN><\/P><\/DIV><\/DIV><\/DIV><\/DIV>",
 "portalUrl": ""
}