Smap Soil Drainage May 2017

25 May 2017

This dataset was last updated on LRIS Portal on 25 May 2017.

There has been a change in the way the S-map is being made available to users. The S-map primary map layer of soil classes (i.e. delineated areas that are labelled with the soil family name) is no longer freely available to commercial users. Access to this data and associated soil attribute data for commercial use is by negotiation - please contact Graeme Anderson (

This layer is a "dissolved" representation of the soil drainage attribute for S-map previously available as a lookup table. It is available for non-commercial use under a creative commons licence (CC-BY-NC-ND).Soil drainage is a relatively simple classification of the soil profile that describes the likelihood of seasonal wetness. It is based on the occurrence within specific depths of redox segregation and low chroma colours indicative of waterlogging and reduction (Webb and Lilburne, 2011).

Very poorly drained
Poorly drained
Imperfectly drained
Moderately well drained
Well drained

Webb TH, Lilburne LR 2011. Criteria for defining the soil family and soil sibling: The fourth and fifth categories of the New Zealand Soil Classification. 2nd ed. Lincoln, Canterbury, New Zealand, Manaaki Whenua Press. 38 p.

1. SmapDrainageClassMay2017 8.7 KB lyr
Technical Details
Layer ID 48565
Data type Vector polygon
Feature count 66746
Attributes Drainage
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), Atom Feed
Added 24 May 2017
Last updated 25 May 2017
Revisions 6 - Browse all revisions
Current revision Imported on Jan. 22, 2018 from Shapefile in NZGD2000 / New Zealand Transverse Mercator 2000. 657 geometries modified to be OGC compliant. Changelog.


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