Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "Lake water quality" indicator (available at https://www.stats.govt.nz/indicators/lake-water-quality). We report on eight biological, chemical, and physical lake water quality attributes based on measurements...

This indicator measures the thickness of total column ozone in Dobson Units (DU) observed above Lauder, Otago, by day of year from 1979 to 2022. Variables: date: The date of the observation in YYYY-MM-DD total_colum_ozone: The thickness of the Total Ozone Column (TOC) in Dobson Units conf_low: Provides a lower limit to the uncertainty associated with the...

Lightning is the discharge of electricity from thunderstorms and can occur within a cloud, between clouds, or between a cloud and the ground. By international standards, lightning does not occur frequently around New Zealand. However, ground strikes can injure or kill people and livestock, damage property and infrastructure, and, although rarely in New...

Trends in percent of annual rainfall in the 95th percentile (r95ptot), 1960–2016. Intense rainfall can result in flash floods or land slips that damage homes and property, disrupt transportation, and endanger lives. It can also interfere with recreation and increase erosion. Changes to the frequency of intense rainfall events can alter biodiversity. Trend...

Rural areas as defined by Statistics New Zealand. Average is unweighted average across North Island rural areas. Note: There is no rural monitoring in the South Island. PM10 concentrations are given in micrograms per cubic metre of air, Source: Regional councils of Bay of Plenty, Waikato; Auckland Council

This dataset measures growing degree days (GDD) at 30 sites across Aotearoa New Zealand from at least 1972 to 2022. We report counts of average annual growing degree days for each site from 2013 to 2022.. Variables: sIte: Site the NIWA climate stations represent. year: Given year the total growing degrees are calculated for. base_temperature:The base...

This indicator measures the physical habitat condition of New Zealand waterways. We report on 369 sites across six North Island regions and 90 sites in one South Island region (Southland), identifying the overall state of stream habitat at each site based on at least three years of data between 2013/14 and 2018/19. Ten physical habitat components are...

Land (whenua) is taonga tuku iho (cultural property, heritage) and of special importance to Māori. As the whakapūmautanga (legacy for the future), whenua provides for cultivation and storage of traditional foods and plants – for customary use and mahinga kai, and helps sustain each generation. We report only on the available data we have, which cover a...

River water quality water is valued for many reasons including ecological function and habitat, recreational value, its role in supporting people and industry, and its cultural significance. Nutrients such as nitrogen and phosphorus are essential for plant growth, however too much can lead to ‘nuisance’ growths of river algae and aquatic plants, degrading...

This indicator report trends in the number of frost days for 30 sites across Aotearoa New Zealand from 1972 to 2022. The number of frost days changes from year to year in response to variable weather patterns, and their occurrence is also influenced by climate change. Climate models project we may experience fewer cold and more warm extremes in the...

This data is deprecated. Please visit https://data.mfe.govt.nz/layer/118263 for the latest version. The Chatham Islands Land Use Map is composed of 12 land use classifications nominally at 1 January 1990, 1 January 2008, 31 December 2012 and 31 December 2016 (known as "1990", "2008", "2012" and "2016") and was created using broadly the same methodology as...

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "River water quality: clarity and turbidity" indicator (available at https://www.stats.govt.nz/indicators/river-water-quality-clarity-and-turbidity). This dataset contains two attriutes of water quality based...

"Fine sediment is the collective term for inorganic particles deposited on the streambed less than 2mm in size. Urban development and agriculture and forestry around waterways can increase the amount of sediment entering river systems. Sedimentation can clog space between pebbles that are used by aquatic insects and fish, alter food sources, and remove...

"Fine sediment is the collective term for inorganic particles deposited on the streambed less than 2mm in size. Urban development and agriculture and forestry around waterways can increase the amount of sediment entering river systems. Sedimentation can clog space between pebbles that are used by aquatic insects and fish, alter food sources, and remove...

This csv reports melanoma registration rates, per 100,000 population, by age. Age is grouped in 5 year segments (eg 0–4 years old, 5–9 years old). New Zealand and Australia have the world’s highest rates of melanoma, the most serious type of skin cancer. Melanoma is mainly caused by exposure to ultraviolet (UV) light, usually from the sun. New Zealand has...

This indicator provides data for the number of warm days (daily maximum temperature above 25 degrees Celsius) for the 30 sites across New Zealand from at least 1972 to 2022. Global average temperatures have increased by around 1 degree Celsius in the last century, almost certainly a result of high levels of atmospheric greenhouse gases emitted from human...

Adapted by Ministry for the Environment and Stats NZ to provide for environmental reporting transparency. Dataset used to develop the "Ocean acidification" indicator (available at https://www.stats.govt.nz/indicators/ocean-acidification). This data set measures the pH at selected coastal sites via the New Zealand Ocean Acidification Observing Network...

Lightning is the discharge of electricity from thunderstorms. Ground strikes can cause significant damage to property and infrastructure, and injure or kill people and livestock. Lightning is often associated with other severe weather events, such as strong wind gusts. Thunderstorms may increase in frequency and intensity with climate change. This dataset...

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...

"Phosphorus is an essential nutrient for plant and animal life. Phosphorus can vary due to differences in land use, climate, elevation, and geology. Total phosphorus (TP) includes all concentrations in a sample, whether dissolved, in solid form or bound to sediment in the river. Dissolved reactive phosphorus (DRP) is the portion which is dissolved and can...