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December 2017This report analyses the state of freshwater quality for the past 25 years based on a national scale model. Read more -
December 2017This report summarises the state and trends of groundwater quality between 2005 and 2014 Read more -
December 2017This report estimates the net amount of surface water available in New Zealand and in each region between 1995 and 2014. Read more -
December 2017This research identifies international and domestic trends and best practice for urban growth management strategies and recommends what guidance could be developed for councils to assist them to meet policies PC12, PC13 and PC14 of the National Policy Statement on Urban Development Capacity. Read more -
November 2017This material is incorporated by reference in the National Policy Statement for Freshwater Management 2020. Read more -
July 2017This report is the first in a series commissioned to better understand the effect of climate change and related policies on Māori and iwi. Read more -
May 2017The Ministry for the Environment commissioned CRL Energy to provide information and calculations of HFC consumption, the import minus the export of bulk HFCs, in New Zealand. This assessment includes historical information and New Zealand’s phase down steps under the Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer. Read more -
April 2017This report presents a case study of cultural assessments for fresh water in the Waitaki catchment in Canterbury. Read more -
April 2017This report provides an overview of the He Pātaka Wai Ora project, which integrated scientific and matauranga māori monitoring methods to establish the state of freshwater species’ biodiversity and water quality in the Waikouaiti catchment in North Otago. Read more -
April 2017This report presents the methods and statistical results of the He Pātaka Wai Ora Project. Read more -
April 2017This report outlines the development of a pressure-state-impact model to predict the effect of water abstractions on river flows, using Canterbury as a case study. Read more -
April 2017This report presents information on potential environmental indicators of water allocation: rates of flow take and volumes of flow take; and their cumulative impacts on river flows. Read more -
April 2017This report aimed to develop national level statistics on water allocation to quantify the pressures on river flows, and in turn freshwater ecosystems. Read more -
April 2017This report presents trends in the abundance of freshwater species between 1977 and 2015 based on standardised data from the New Zealand Freshwater Fish Database. Read more -
April 2017This report looks at the state and trends of water quality in urban streams, with a focus on Auckland, Wellington and Christchurch. Read more -
April 2017This report models the state of water quality along New Zealand’s national river network, using data measured at freshwater monitoring sites between 2009 and 2013. Read more -
April 2017This report outlines the development of a database to house scientific and cultural information on the health of Te Arawa lakes (Bay of Plenty). Read more -
February 2017This report provides an evaluation under section 32 of the Resource Management Act 1991 of the proposed amendments to the National Policy Statement for Freshwater Management 2014. Read more -
February 2017This report has been produced to test potential consequences of setting freshwater objectives for hydro scheme operations. Modelling was undertaken of a selection of various scenarios involving an increase in minimum flows in selected rivers to assess the impact of draft proposals to amend the NPS Freshwater Management on the New Zealand electricity system. Read more -
February 2017This report addresses the question, “By how much would mitigation measures decrease the proportion of time that river reaches exceed the primary contact (swimming) minimum acceptable state E. coli concentration of 540 per 100 ml?” Read more -
February 2017This report provides advice on statistical issues relevant to the 2014 National Policy Statement for Freshwater Management, having particular regard to its National Objectives Framework (NOF). Read more -
February 2017Sediment is an important contaminant in New Zealand freshwaters. This report presents the development of an analytical framework to empirically relate various key instream measures of sediment to catchment sediment loads. Read more -
February 2017This report is a strategic assessment of New Zealand’s freshwaters for recreational use from a human health perspective. It outlines the methods used to produce spatial predictions of E. coli and cynobacterial biovolume at unmonitored locations. Read more