"A unit of rock or sediment is called an aquifer when it can yield a usable quantity of water.
Aquifers may occur at different depths in the same location. The map shows the areas of New Zealand’s land surface above one or more aquifers. The aquifer boundaries were described by White (2001), and some boundaries were updated by Moreau and Bekele (2015), using information provided by regional councils and from Lovett and Cameron (2015). The map has 153 polygons (aquifer outlines), some of which have more than one aquifer.
Methods for defining aquifer boundaries generally rely on knowing the locations and characteristics of productive wells, and using geological maps to identify water–bearing materials. In many cases, these boundaries are also influenced by management attributes such as regional or property boundaries, and surface water catchments (Lovett & Cameron, 2015).
This dataset relates to the ""Location and area of New Zealand’s aquifers"" measure on the Environmental Indicators, Te taiao Aotearoa website.
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|1.||Location and extent of NZ's aquifers, 2015||186 KB||
|Category||Environmental Reporting > Freshwater > Groundwater stocks|
|Tags||water, New Zealand, WATER-Quality|
|Metadata||ISO 19115/19139, Dublin Core|
|Data type||Vector multipolygon||Feature count||153|
|Attributes||AREA, region, Name, Source, GW_book_ID, plgn_ID, Status, Litho_Geol, Smpl_litho, Shape_Length|
|Services||Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed|
|Added||11 Jan 2016|
|Last updated||11 Jan 2016|
|Revisions||3 - Browse all revisions|
|Current revision||Imported on Feb. 19, 2016 from File Geodatabase in NZGD2000 / New Zealand Transverse Mercator 2000. 12 geometries modified to be OGC compliant. Changelog.|
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