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River Environment Classification Catchment Order 4 (2010)

  • Added 04 Oct 2010
  • Updated 24 Mar 2015

The REC groups rivers and parts of river networks that share similar ecological characteristics, including physical and biological. Rivers that share the same class can be treated as similar to one another and different to rivers in other classes. The REC classification system groups rivers according to several environmental factors that strongly influence or cause the rivers’ physical and ecological characteristics (climate, topography, geology and land cover). A catchment is a polygon that defines the upstream watershed of a river system or sub-system. Land cover within the catchment was used to populate the river classification factors (see table 1.1 of the User Guide ).

Additional metadata can be found at


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1. River Environment Classification catchment metadataparent 30.2 KB xml


RegionsNew Zealand
MetadataISO 19115/19139, Dublin Core

Technical Details

Layer ID 52364
Data type Vector multipolygon
Feature count 3164
Attributes Sum_AREA, order, NZreach, Tot_reach
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), Atom Feed


Added4 Oct 2010
Revisions 7 - Browse all revisions
Current revision Imported on Oct. 17, 2011 in NZGD49 / New Zealand Map Grid.
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