A subset of Critchlow NationalMap consisting of contextual river features (major rivers and tributaries) represented by polygon objects derived by Critchlow from paper Topographic maps (mainly LINZ). NB see RiverLine for line and polyline objects

These features indicate the location of rivers. Where significant flow or width and depth of a river is evident these are represented by polygons. Polygon segments are also evident in urban areas to provide a more complete representation. Line networks show rural or highland areas where flow is not significant. Rivers are named where available.

The rivers are each assigned a heirarchy based on the "Strahler" stream order classification, for simplicity, generally only heirarchies of three to eight have been included in this dataset.

Technical Details
Layer ID 36598
Data type Vector multipolygon
Feature count 6316
Primary key ID
Attributes NAME, ID, HIERARCHY, DATE_MOD
Services Vector Query API, Web Feature Service (WFS)
History
Added 10 Apr 2017
Last updated 7 Nov 2018
Revisions 6 - Browse all revisions
Current revision Imported on Nov. 7, 2018 from Shapefile in NZGD2000 / New Zealand Transverse Mercator 2000.