Groundwater quality, state, 2014-18

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Creative Commons Attribution 4.0 International

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696
16
Updated
11 Jun 2021

This dataset was last updated on MfE Data Service on 11 Jun 2021.

11 June 2021: A revised version of this dataset has been published to correct the terminology used to compare nitrate-nitrogen values to the 3 g/m3 guideline value. The field name has been changed from “reference_condition” to “n_n_guideline”, and values in this field will now be either “Does not exceed” or “Exceeds”, instead of “Meets” or “Does not meet”.

20 July 2020: We corrected the data about drinking water standards for E. coli and nitrate-nitrogen in the key findings for groundwater quality.

For the five-year period 2014‒2018:

  • 68 percent of 364 sites failed to meet the E.coli drinking water standards (changed from 98 percent of 145 sites failed to meet the E. coli drinking water standards)
  • 19 percent of 433 sites didn’t meet nitrate-nitrogen standards (changed from 28 percent of 403 sites failed to meet the nitrate-nitrogen drinking water standards).

This indicator measures groundwater quality in New Zealand’s aquifers and how it is changing over time, based on measurements made at monitored sites. We report on nitrate-nitrogen, ammoniacal nitrogen, dissolved reactive phosphorus, chloride, conductivity and Escherichia coli (E. coli) including:

  • median values for the period 2014–18
  • nitrate-nitrogen median values compared to a guideline value of 3 grams per cubic metre (g/m3). This value is defined as a concentration that indicates groundwater has been influenced by industrialised agriculture and is highly likely to have been impacted by human activity (per Morgenstern & Daughney, 2012 and Daughney & Reeves, 2005).
  • the proportion of samples from each site that have concentrations of nitrate-nitrogen or E. coli in excess of the Maximum Acceptable Values for protection of human health (Ministry of Health, 2018).

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.

Table ID 104569
Data type Table
Row count 14644
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Groundwater quality state 2010–2014

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Creative Commons Attribution 4.0 International

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3795
11
Updated
11 Jun 2021

This dataset was last updated on MfE Data Service on 11 Jun 2021.

11 June 2021: A revised version of this dataset has been published to correct the terminology used to compare nitrate-nitrogen values to the 3 g/m3 guideline value. The field name has been changed from “ref_meet” to “n_n_guideline”, and values in this field will now be either “Does not exceed” or “Exceeds”, instead of “Meets” or “Does not meet”.

This dataset measures groundwater quality in New Zealand’s aquifers based on measurements made at monitored sites. Many factors influence the quality of our groundwater. Nitrogen, which occurs naturally in groundwater, can increase in concentrations due to agricultural and urban land use, and infrastructure such as waste treatment plants. High concentrations of nitrate-nitrogen in groundwater can affect human health and the quality of surrounding rivers and lakes that receive inflows from groundwater. Ammoniacal nitrogen can cause an undesirable smell that may make groundwater unsuitable for drinking water. Natural processes in groundwater can convert nitrate-nitrogen into ammoniacal nitrogen or other forms under some chemical conditions. Surplus phosphorus drains (leaches) into groundwater as dissolved reactive phosphorus. Too much nitrate-nitrogen, ammoniacal nitrogen, and phosphorus can lead to excessive plant and algae growth where groundwater flows into surface water. E. coli in groundwater is measured in colony forming units (cfu) and can indicate the presence of pathogens (disease-causing organisms) from animal or human faeces. The pathogens can cause illness for anyone who ingests them.

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.

Table ID 99855
Data type Table
Row count 741
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

River water quality modelled, state, 2013–2017

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Creative Commons Attribution 4.0 International

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1188
583
Updated
22 Apr 2021

This dataset was last updated on MfE Data Service on 22 Apr 2021.

23 April 2021: A new version of this data set has been published. It includes data on 4 parameters (Ammoniacal nitrogen (adjusted), Escherichia coli, Macroinvertebrate Community Index and Total Phosphorus) that had been missing from the file that was published as part of the Our freshwater 2020 release in April 16 2020. The updated data set also includes data on DRP for all 593,337 REC segments, since the file from April 16 2020 only had data for 255,860 of these segments.

16 April 2020: Subsequent to publication in April 2019 we discovered two small errors with this dataset. These included:

  • Errors in the coordinates of some sites and their associated metadata (such as landcover and elevation).
  • Errors in our calculation of dominant landcover.

In addition, flow data from TopNet has also been updated.

These changes have a minor impact on overall results. These changes have have been corrected, and are republished here, as part of the Our freshwater 2020 release.

IMPORTANT INFORMATION

1) The main (cleaned) dataset is structured by each row having a nzsegment and np_id combination. A large dataset (~ 1 GB) has resulted, due to the inclusion of the ANZG/NOF columns and the 10 different np_id values. There are ~ 6 million rows to this dataset, however a 32-bit version of Microsoft Excel will only display/download ~ 1 million rows. __A DBMS, statistical or GIS application is needed to view the entire dataset__.

2) A smaller raw dataset (see attachments) is provided which structures each row relating to a river segment and drops the ANZG/NOF columns.

3) The attached metadata/date quality report provides further information on the NOF, ANZG and the "McDowell meet/doesnt meet" attachment.

This dataset contains ten parameters of water quality based on measurements made at monitored river sites:

  • Nitrate-nitrogen
  • Ammoniacal nitrogen
  • Ammoniacal nitrogen (adjusted)
  • Total nitrogen
  • Total phosphorus
  • Dissolved reactive phosphorus
  • Water clarity
  • Turbidity
  • Escherichia coli
  • Macroinvertebrate community index These parameters are used to measure:
  • Modelled median values for all of New Zealand’s river length for the period 2013 to 2017
  • For selected indicators, how the modelled values compare to the National Objectives Framework (NOF) (MfE, 2017) bands related to ecosystem health and human health for recreation, and to expected concentrations in natural conditions, as shown by the default guideline values in the Australian and New Zealand guidelines for fresh and marine water quality (ANZG, 2018)

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.

Summary report available at www.mfe.govt.nz/publications/fresh-water/spatial-m...

Table ID 99871
Data type Table
Row count 5933730
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land fragmentation, 2002 - 2019

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Creative Commons Attribution 4.0 International

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423
6
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: Manaaki Whenua - Landcare Research

[Technical report available at environment.govt.nz/publications/land-fragmentatio...]

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Land fragmentation" indicator [available at www.stats.govt.nz/indicators/land-fragmentation]

This indicator measures changes in total highly productive land (HPL) area and the distribution of this land area across different land parcel size classes, since 2002, with a particular interest in the fragmentation or subdivision of these land parcels. We define HPL by land use capability (LUC), and includes classes 1, 2, and 3 (land highly suitable for growing a range of crops). We assess this fragmentation against two potential impacts: land that cannot be used or is restricted from use as farmland because of its new residential or urban land use (‘land restricted from use as farmland’) and that which may still be able to be used for growing/production (‘land potentially available for use as farmland’).

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. The technical report for this dataset is available at environment.govt.nz/publications/land-fragmentatio...

Table ID 105415
Data type Table
Row count 3120
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Soil quality, state, 1996 - 2018

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

403
5
Updated
14 Apr 2021

This dataset was last updated on MfE Data Service on 14 Apr 2021.

DATA SOURCE: Manaaki Whenua Landcare Research; regional and district councils

[Technical report available at environment.govt.nz/publications/soil-quality-data... and environment.govt.nz/publications/soil-quality-and-...]

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Soil quality and land use" indicator [available at www.stats.govt.nz/indicators/soil-quality-and-land...]

We report on seven soil properties from 1996 to 2018: pH (a measure of acidity), Olsen phosphorus (a measure of fertility), total carbon, total nitrogen, and anaerobically mineralisable nitrogen (measures of organic reserves), and macroporosity and bulk density (measures of physical status). These are assessed across nine land uses. We report the proportion of sites above, below, and within soil quality target ranges for each of the seven soil quality indicators by land use, as well as by soil order.

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. Technical report links for this dataset are environment.govt.nz/publications/soil-quality-data... and environment.govt.nz/publications/soil-quality-and-...

Table ID 105416
Data type Table
Row count 26534
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Extinction threat to indigenous land species

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Creative Commons Attribution 4.0 International

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332
3
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: Department of Conservation (DOC)

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Extinction threat to indigenous land species" indicator [available at www.stats.govt.nz/indicators/extinction-threat-to-...]

We report on the extinction threat to indigenous, resident, living land species that have been assessed by expert panels under the New Zealand Threat Classification System (NZTCS). They include bats, frogs, reptiles, terrestrial invertebrates, vascular plants, non-vascular plants (mosses, hornworts, and liverworts), lichens and terrestrial birds (which exclude seabirds and shorebirds, which are reported under extinction threat of indigenous marine species).

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.

Table ID 105412
Data type Table
Row count 11861
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land cover, 1996 to 2018

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Creative Commons Attribution 4.0 International

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432
29
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: Manaaki Whenua - Landcare Research

[Main dataset and further metadata can be found at lris.scinfo.org.nz/layer/104400-lcdb-v50-land-cove...]

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Urban land cover" "Exotic land cover" and "Indigenous land cover" indicators [available at www.stats.govt.nz/indicators/urban-land-cover, www.stats.govt.nz/indicators/exotic-land-cover, www.stats.govt.nz/indicators/indigenous-land-cover]

For lcdb50_change

As there are over ~ 1 million rows to this dataset, a 32-bit version of Microsoft Excel __may not fully display/download all rows. A DBMS, statistical or GIS application may be needed to view the entire dataset__.

This indicator measures urban, exotic, and indigenous land cover area in New Zealand from 1996 to 2018.

Urban, exotic, and indigenous land cover are derived from the LAWA (Land Air Water Aotearoa) land categories. Urban land cover includes urban area comprising built-up area /settlement and urban parkland /open space and artificial bare surfaces which includes transport infrastructure and surface mine or dump. Exotic land cover includes exotic forest, exotic scrub/shrubland, exotic grassland and cropping and horticulture. Indigenous land cover includes indigenous forest, indigenous scrub/shrubland, tussock grassland, natural bare/lightly vegetated surfaces, and other herbaceous vegetation. Data is from the New Zealand Land Cover Data Base (LCDB5). We report on urban, exotic, and indigenous land cover area, and net change in urban, exotic, and indigenous land cover area, for New Zealand and by region. We also report on specific urban, exotic, and indigenous land cover classes.

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.

Table ID 105422
Data type Table
Row count 5160760
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Fertilisers, nitrogen and phosphorus, applied, 2002 - 2019

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Creative Commons Attribution 4.0 International

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308
5
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: Fertiliser Association of New Zealand

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Fertilisers phosphorus and nitrogen applied" indicator [available at statisticsnz.shinyapps.io/farm_fertiliser_ap...]

This indicator measures the amount of nitrogen and phosphorus-based fertiliser (Urea, diammonium phosphate, superphosphate and ammonium sulphate) applied to agricultural land from 2002 to 2019 by region and dominant farm type.

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.

Table ID 105411
Data type Table
Row count 4361
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Fertilisers, nitrogen and phosphorus, sold, 1991 - 2019

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Creative Commons Attribution 4.0 International

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286
0
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: National Institute for Water and Atmospheric Research (NIWA)

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Far fertiliser applied" indicator [available at statisticsnz.shinyapps.io/farm_fertiliser_ap...]

This indicator reports industry estimates of nitrogen and phosphorus (as elements) sold in fertiliser products nationally from 1991 to 2019.

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.

Table ID 105410
Data type Table
Row count 105
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Farm numbers and size, 2002 - 2019

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Creative Commons Attribution 4.0 International

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331
7
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: Statistics New Zealand Agricultural Production Survey (APS)

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Farm numbers and size" indicator [available at www.stats.govt.nz/indicators/farm-numbers-and-size]

We present the number and area of farms in New Zealand and by region from 2002 to 2019.

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.

Table ID 105409
Data type Table
Row count 211
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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