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Wetland extent, 2001-16

  • Added 16 Apr 2018
  • Updated 17 Apr 2018

Wetlands support high levels of biodiversity. They provide habitat for native invertebrates, plants, fish, and bird species (eg fernbird, kōkopu, and eels), many of which live only in wetlands. Wetlands act as ‘kidneys’ and giant sponges – they clean the water of excess nutrients and sediment, control flood water and pollutants, and act as carbon sinks (removing carbon dioxide from the atmosphere). Wetlands have strong cultural and spiritual importance for Māori. They are a food source (eg eel, whitebait) and provide material for weaving (eg raupō, harakeke (flax)). Draining wetlands for agricultural and urban development over the past 150 years has led to significant wetland loss and deterioration.

Summary report available at

More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.


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1. Data quality info for wetland extent 188 KB pdf


TagsOur land 2018
RegionsNew Zealand
MetadataISO 19115/19139, Dublin Core

Technical Details

Layer ID 95347
Data type Vector multipolygon
Feature count 14632
Attributes REGC2017_N, Wetland, checked, Mapped, Truth, Comment, area
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), Atom Feed


Added16 Apr 2018
Revisions 8 - Browse all revisions
Current revision Imported on April 16, 2018 in NZGD2000 / New Zealand Transverse Mercator 2000. 88 geometries modified to be OGC compliant. Changelog.
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