Datasets
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PM2.5 concentrations, 2008–17
Ministry for the EnvironmentPM2.5 is made up of solid and liquid particles in the air with a diameter of less than 2.5 micrometres. In New Zealand, most PM2.5 in the air results from combustion (burning wood for home heating, motor-vehicle exhaust), and to a lesser extent, particles formed from reactions in the atmosphere (secondary PM) and naturally occurring sea salt. Short- and...Created 2 February 2020 • Updated 3 May 2025 -
Annual average Interdecadal Pacific Oscillation Index (1871–2013)
Ministry for the EnvironmentThe Interdecadal Pacific Oscillation (IPO) describes the long-term oscillation of the Pacific Ocean. The Pacific climate oscillation causes climate fluctuations that can influence New Zealand’s climate. For example, it can affect the strength and frequency of El Niño and La Niña events. In New Zealand, the positive phase of the IPO is linked to stronger...Created 2 February 2020 • Updated 3 May 2025 -
River Environment Classification Catchment Order 2 (2010)
Ministry for the EnvironmentThe 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...Created 1 January 2023 • Updated 3 May 2025 -
River water quality: Nitrogen, trends, 1991 - 2020
Ministry for the EnvironmentAdapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the “River water quality: Nitrogen” indicator, (available at https://www.stats.govt.nz/indicators/river-water-quality-nitrogen). Nitrogen in river waters is one of five parameters that provide an overview of New...Created 1 September 2022 • Updated 3 May 2025 -
River Environment Classification Catchment Order 3 (2010)
Ministry for the EnvironmentThe 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...Created 1 January 2023 • Updated 3 May 2025 -
LUCAS NZ Land Use Map 1990 2008 2012 2016 v011 DEPRECATED
Ministry for the EnvironmentThis data is deprecated. Please visit https://data.mfe.govt.nz/layer/117733 for the latest version. The LUCAS NZ Land Use Map 2016 v011 is composed of New Zealand-wide land use classifications (12) nominally at 1 January 1990, 1 January 2008, 31 December 2012 and 31 December 2016 (known as "1990", "2008", "2012" and "2016"). These date boundaries were...Created 3 June 2024 • Updated 3 May 2025 -
River Environment Classification Catchment Order 1 (2010)
Ministry for the EnvironmentThe 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...Created 1 January 2023 • Updated 3 May 2025 -
River Environment Classification Catchment Order 5 (2010)
Ministry for the EnvironmentThe 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...Created 1 January 2023 • Updated 3 May 2025 -
Wetland extent, 2001-16
Ministry for the EnvironmentWetlands support high levels of biodiversity. They provide habitat for native invertebrates, plants, fish, and bird species (eg fernbird, kōkopu, and eels), many of which live only in wetlands. Wetlands act as ‘kidneys’ and giant sponges – they clean the water of excess nutrients and sediment, control flood water and pollutants, and act as carbon sinks...Created 2 February 2020 • Updated 3 May 2025 -
Environmental Limiting Factors (2012)
Ministry for the EnvironmentA spatial dataset identifying a set of environmental conditions that have potential to inhibit growth of newly-established woody vegetation such that it might not reach a ‘forest’ status (defined as greater than 30% cover of trees of 5 m height) within a 30-40 year timeframe. Inclusions: temperature, moisture availability, edaphic conditions, coastal...Created 2 February 2020 • Updated 3 May 2025 -
Daily rainfall at 30 sites, state, 1960 - 2022
Ministry for the EnvironmentThis dataset measures daily rainfall at 30 sites across Aotearoa New Zealand from 1960 to 2022. Variables: site: location of monitoring station date: date rainfall: rainfall in mm rainfall_units: rainfall is measured in mm lat: Approximate latitude location of NIWA climate stations to represent a site. lon: Approximate longitude location of NIWA climate...Created 1 February 2024 • Updated 3 May 2025 -
River water quality: Macroinvertebrate community index, modelled, 2016 - 2020
Ministry for the EnvironmentNote that this is a large dataset so is provided as a shapefile, and will need a GIS application to view. Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "River water quality: macroinvertebrate community index" indicator (available at...Created 1 September 2022 • Updated 3 May 2025 -
Agricultural and horticultural land use, clean, 2002 - 2019
Ministry for the EnvironmentDATA 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 "Agricultural and horticultural land use" indicator (available at https://www.stats.govt.nz/indicators/agricultural-and-horticultural-...Created 2 May 2021 • Updated 3 May 2025 -
Irrigated land area, raw, 2020 update
Ministry for the EnvironmentDATA SOURCE: Aqualinc Research Limited [Technical report available at https://environment.govt.nz/publications/national-irrigated-land-spatial-dataset-2020-update] Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency The spatial data covers all mainland regions of New Zealand, with the...Created 2 May 2021 • Updated 3 May 2025 -
Average annual rainfall, 1972–2016
Ministry for the EnvironmentRain is vital for life – it supplies the water we need to drink and to grow our food, keeps our ecosystems healthy, and supplies our electricity. New Zealand’s mountainous terrain and location in the roaring forties mean rainfall varies across the country. Changes in rainfall amount or timing can significantly affect agriculture, energy, recreation, and...Created 2 February 2020 • Updated 3 May 2025 -
Air pollutant emissions
Ministry for the EnvironmentAn emissions inventory provides information on the amount of key air pollutants that are released into the atmosphere for a given location over a given time period. This enables us to identify sources of pollutants. By understanding the amounts that different sources contribute, air quality can be better managed and modelled. We evaluated emissions for...Created 2 February 2020 • Updated 3 May 2025 -
River Environment Classification Catchment Order 4 (2010)
Ministry for the EnvironmentThe 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...Created 1 January 2023 • Updated 3 May 2025 -
NZ Airsheds Gazetted
Ministry for the EnvironmentA spatial dataset delineating the extent of regional airsheds notified in the New Zealand Gazette (https://gazette.govt.nz).Created 2 February 2020 • Updated 3 May 2025 -
River water quality: Nitrogen, modelled, 2016 - 2020
Ministry for the Environment Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the “River water quality: Nitrogen” indicator, (available at https://www.stats.govt.nz/indicators/river-water-quality-nitrogen). Nitrogen in river waters is one of five parameters that provide an overview of New...Created 1 September 2022 • Updated 3 May 2025 -
Location and extent of NZ's aquifers, 2015
Ministry for the Environment"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),...Created 2 February 2020 • Updated 3 May 2025