Publication Search
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November 2013This technical report provides evidence and advice used in setting the E. Coli attribute bands for secondary contact recreation in rivers and lakes. Read more -
December 2019This guide provides information for people who import, manufacture, or sell products covered by New Zealand’s Water Efficiency Labelling Scheme (WELS). Read more -
November 2006This 2006 discussion paper draws together the measures that make up New Zealand’s contaminated land policy framework, and evaluates them to identify any gaps and possible solutions/improvements to the existing framework. Read more -
May 2019This report reviews how mechanistic (process-based) models simulate periphyton biomass using algorithms describing known growth and loss processes based on nutrients, light, temperature, grazing, and physical factors. Read more -
September 2007This paper sets out a prioritised Ministry work programme to help manage contaminated land. Read more -
April 2004This document provides interim guidance on ‘functional’ indicators of ecosystem processes, such as ecosystem metabolism Read more -
May 2019This report summarises a workshop held to gather feedback on the ‘Interim New Zealand Guidelines for Cyanobacteria in Recreational Fresh Waters’. Read more -
September 2007This report contains a summary of the submissions received on the discussion paper Working Towards a Comprehensive Policy Framework for Managing Contaminated Land in New Zealand – Discussion paper. Read more -
April 2011This guideline has been developed through a partnership between the Ministry for the Environment, regional councils and unitary authorities to ensure consistency in the reporting on contaminated sites. Read more -
July 2001This publication provides background information about the sources, causes and processes involved with the deterioration of streams in farmed catchments and the consequences of that deterioration. Read more -
November 2019This report presents the approach and results of groundwater use in New Zealand. Read more -
April 2019This report summarises analysis methods and outcomes for state and trends across New Zealand’s lake water quality monitoring network. Read more -
April 2019This report summarises analysis methods and outcomes for state and trends across New Zealand’s river water quality monitoring network. Read more -
July 2009This report summarises changes in nuisance periphyton (algal) growth at National River Water Quality Network sites between 1990 and 2006. Read more -
September 2016This draft revised guideline has been released to assist understanding of the proposed amendments to the National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health. The final revised guideline will be gazetted in early 2017. Read more -
May 2019This report analyses environmental conditions that cause the growth of periphyton in streams and rivers. Read more -
September 2020An evaluation report and compilation spreadsheet of available tools, databases and resources relating to the distribution of threatened freshwater species and their habitats in New Zealand. Read more -
November 2003The Ministry and local government developed these guidelines to ensure the consistent selection and application of the environmental guideline values most commonly used in contaminated site assessments in New Zealand. Read more -
September 2019This draft NIWA report provides the first attempt to develop bottom-line thresholds for suspended and deposited sediment based on ecological responses for New Zealand rivers and streams. Read more -
May 2020This NIWA report summarises existing literature on the consequences of delaying reductions to nutrient inputs on rivers, estuaries and lakes. Read more -
April 2015One of two reports that assessed the options and implications of using the Macroinvertebrate Community Index (MCI) as an attribute in the National Policy Statement for Freshwater Management. It looked at identifying potential threshold values to define numeric attribute states for MCI. Read more -
December 2013An investigation into the feasibility of using freshwater fish predictive models in national state of the environment indicators. Read more -
December 2018Ministry for the Environment, in partnership with Bay of Plenty Regional Council, commissioned a literature review to get an accessible summary of relevant research carried out in New Zealand on methods to manage sediment and their economic assessment. Read more -
Corrections to errors on visual water clarity units in ANZECC Guidelines. Read more -
May 2018This report outlines the establishment of reference conditions and trigger values. Reference conditions are defined as the chemical, physical or biological conditions that can be expected in streams and rivers with minimal or no anthropogenic influence. Read more -
September 2020This document provides detailed technical guidance about the new freshwater planning process (FPP) introduced by the Resource Management Amendment Act 2020. Read more -
October 2018This document captures areas of shared interest in water quality and ecosystem health improvements and defines how the Crown and Māori will work together to make improvements to New Zealand’s freshwater. Read more -
December 2004This discussion document outlines the different ways in which New Zealanders value and use freshwater. It also looks at how New Zealand’s water is managed and the pressures and challenges facing our water management system. Read more -
June 2002Information for lake managers on pest fish and weeds in New Zealand lakes. Read more -
June 2001The Soil Conservation Handbook is a comprehensive collection of information about soil conservation in New Zealand. Part A covers the forms and processes of the main types of erosion in New Zealand while Part B describes the control techniques. Read more -
May 2018Phormidium is a potentially toxic, mat-forming benthic cyanobacterium found in an increasing number of New Zealand rivers. This report outlines a study which investigated drivers of Phormidium blooms in New Zealand rivers to predict risk of blooms. Read more -
April 2019This report summarises analysis methods and outcomes for modelling New Zealand’s river water quality. Read more -
April 2019This report summarises analysis methods and outcomes for modelling New Zealand’s lake water quality. Read more -
May 2019This report develops a model predicting the reference state for stream macroinvertebrates across New Zealand. Read more -
January 2010This environmental snapshot provides information on the pressures on New Zealand’s environment from land use. Read more -
May 2020A literature review of studies that jointly considered climate and freshwater policy in New Zealand. Read more -
July 2013The latest indicator update providing information on the biophysical condition of New Zealand's rivers. Read more
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September 2019This data report provides an annual data picture of brassica grown in New Zealand. Read more
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April 2006In early 2005, the Government held meetings throughout New Zealand to discuss problems facing water management , and to identify possible solutions. This document summarises what we found out, and what we believe needs to be done to improve freshwater management in New Zealand. Read more -
October 2018This document sets out the Government’s plan to restore and protect freshwater in New Zealand. Read more -
June 2010The report assesses how well Integrated catchment management is working in New Zealand for managing freshwater quality. Read more -
November 2001This protocol identifies and describes standardised protocols for use by agencies throughout New Zealand for macroinvertebrate biomonitoring. Read more -
May 2019This report provides information to help interpret trends in water quality of New Zealand’s lakes and rivers. Read more -
January 2010The latest indicator update providing information on the state of New Zealand’s land, using the soil health indicator. Read more -
October 2018This document describes a framework for assessing the biophysical ecosystem health of fresh water in Aotearoa New Zealand. Read more -
February 2016This consultation document sets out the Government’s proposals to improve the management of fresh water in New Zealand. Read more -
July 2014This leaflet explains what New Zealanders need to know about improving the way we manage our fresh water. Read more -
July 2006This report investigates approaches for the allocation and subsequent reallocation of water in New Zealand, including situations of over-allocation. Read more -
March 2013This paper sets out the Government’s approach to reforming New Zealand’s freshwater management system. Comments closed on 8 April 2013. Read more -
April 2018This report provides an analysis of New Zealand’s wetland loss for the period summer 2001/2 through to summer 2015/2016. Read more