Accumulated freshwater takes, 2013–14

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Creative Commons Attribution 3.0 New Zealand

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809
46
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Flow is the volume of water passing a point over a certain time, and provides information about the availability of water for people and the environment. Overall, this affects how much water is available for irrigation, drinking water, hydroelectricity generation, and recreational activities. River flows also influence a waterway’s physical form, habitat, and ecological processes like migration, spawning, and food supply for aquatic life.

The file provides the estimated impact of upstream consents on the modelled median flow of a particular reach in the digital river network. This is calculated by upstream total consented takes by median flow.

Table ID 53614
Data type Table
Row count 692989
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Ammoniacal nitrogen trends, 1989–2013

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Creative Commons Attribution 3.0 New Zealand

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3660
33
Added
19 Feb 2016

This dataset was first added to MfE Data Service on 19 Feb 2016.

Small amounts of nitrogen are a natural component of healthy rivers. Nitrogen is transferred from land to water and is cycled through different forms, which can have different effects. Moderate concentrations of nitrate can cause weeds and algae to grow too fast. High concentrations of ammoniacal and nitrate nitrogen can be toxic to fish and other aquatic animals.
This dataset relates to the "River water quality trends: nitrogen" measure on the Environmental Indicators, Te taiao Aotearoa website.

Layer ID 53318
Data type Vector point
Feature count 77
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Ammoniacal nitrogen, 2009–2013

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Creative Commons Attribution 3.0 New Zealand

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3092
34
Added
11 Jan 2016

This dataset was first added to MfE Data Service on 11 Jan 2016.

"Small amounts of nitrogen are a natural component of healthy rivers. Nitrogen in rivers can vary due to differences in land use, climate, elevation, and geology. Nitrogen is transferred from land to water and is cycled through different forms, which can have different effects. Moderate concentrations of nitrate can cause weeds and algae to grow too fast. High concentrations of ammoniacal and nitrate nitrogen can be toxic to fish and other aquatic animals.
This dataset relates to the ""Geographic pattern of nitrogen in river water"" measure on the Environmental Indicators, Te taiao Aotearoa website. "

Layer ID 52721
Data type Vector point
Feature count 773
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Analysis of Water Quality in New Zealand Lakes and Rivers

Licence

Creative Commons Attribution 3.0 New Zealand

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6328
1302
Added
18 Oct 2015

This item was first added to MfE Data Service on 18 Oct 2015

107
Document ID11698
File nameanalysis-of-water-quality-in-new-zealand-lakes-and-rivers.pdf
TypePDF
Size2.31 MB

Annual national electricity generation, total and hydrogeneration, 1974-2013

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Creative Commons Attribution 3.0 New Zealand

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2542
16
Added
29 Sep 2015

This dataset was first added to MfE Data Service on 29 Sep 2015.

Hydroelectricity is a renewable source of electricity. It makes an important contribution to New Zealand’s energy supply and economy.

This dataset relates to the "Contribution of hydroelectricity to total electricity generation" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52542
Data type Table
Row count 80
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Asset value of water resources used for hydroelectric generation, 2007–15

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Creative Commons Attribution 3.0 New Zealand

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You must attribute the creator in your own works.

2484
7
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Water is an important source of energy that contributes to New Zealand’s energy supply and the economy. As the main source of renewable energy in New Zealand, the use of water supports the production of the electricity industry. Tracking the value of this water as a natural resource – along with land form, slope, and elevation, which all help to generate hydroelectricity – shows the economic benefits derived from water use for current and future generations. Changes in flow regimes and climate can affect these values.

We report on the value of water resources used to generate hydroelectricity. This value includes both the returns received from current use (resource rent), and expected benefits from future use (the asset value).

Table ID 53615
Data type Table
Row count 54
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Average estimated groundwater volume, by region, 2010-2014

Licence

Creative Commons Attribution 3.0 New Zealand

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You must attribute the creator in your own works.

2732
51
Added
29 Sep 2015

This dataset was first added to MfE Data Service on 29 Sep 2015.

Groundwater is the water stored beneath Earth’s surface in aquifers (layers of water-bearing rock or sand). It is used for human and stock drinking water, irrigation, and industry, and also has a role in sustaining some rivers, lakes, and wetlands, especially during low-flow periods. The health of surface-water ecosystems also depends on groundwater.

Estimated average groundwater volumes by 16 regional councils
* region = Regional Council
* bil_cubicm = Average estimated groundwater volume in billion cubic metres

For more information please see:
Moreau M, & Bekele, M (2015). Groundwater Component of the Water Physical Stock Account (WPSA) GNS Science Consultancy Report 2014/290. 35p. Available at data.mfe.govt.nz/x/Tebsax from the Ministry for the Environment dataservice.

This dataset relates to the "Groundwater physical stocks" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52529
Data type Table
Row count 16
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Average estimated national groundwater volume per year, 1994-2014

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Creative Commons Attribution 3.0 New Zealand

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You must attribute the creator in your own works.

2413
24
Added
29 Sep 2015

This dataset was first added to MfE Data Service on 29 Sep 2015.

Groundwater is the water stored beneath Earth’s surface in aquifers (layers of water-bearing rock or sand). It is used for human and stock drinking water, irrigation, and industry, and also has a role in sustaining some rivers, lakes, and wetlands, especially during low-flow periods. The health of surface-water ecosystems also depends on groundwater.

Estimated national groundwater volumes by year and aquifer type (confined, or unconfined)
aquifer_ty = aquifer type
cubicm = estimated groundwater volume in cubic metres (m3)

This dataset relates to the "Groundwater physical stocks" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52528
Data type Table
Row count 42
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Conservation status of native freshwater fish and invertebrates, 2013

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Creative Commons Attribution 3.0 New Zealand

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2734
44
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

New Zealand has a diverse range of freshwater species. Many of these species are endemic to (only occur in, or only breed in) New Zealand. Freshwater fish and invertebrates are indicator species for the state of our freshwater environment. A decreasing population can indicate that the ecosystem is degrading.

This measure reports on the conservation status of New Zealand's indigenous freshwater fish and invertebrate species, including the number of species that have had a genuine change in conservation status between two monitoring periods (2009–13 and 2005–13). A change in a species’ conservation status reflects a change in its risk of extinction.

Table ID 53612
Data type Table
Row count 723
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Cultural Health Index scores for waterways, 2005–16

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Creative Commons Attribution 3.0 New Zealand

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2221
21
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Cultural Health Index scores for a waterway is a combination measure of historical cultural use and access, mahinga kai assessment, and water quality assessment from a cultural perspective of a site on a waterway.

The Cultural Health Index scores compile this information into a classification system to provide an overall grading of the state of a site and how the state of a site on a waterway affects the mauri, the ability for tangata whenua to feed the hapu and iwi and the overall water quality for the site. These are all important indicators of the cultural health of a waterway, and are also a consideration for other cultural and recreational activities like karakia, cleansing, swimming and wading.

Table ID 53617
Data type Table
Row count 42
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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