Documents incorporated by reference into the National Policy Statement for Freshwater Management 2020

Certified copies of documents incorporated by reference into the National Policy Statement for Freshwater Management 2020 (Freshwater NPS 2020). The documents, or the specified parts of these documents, have the same legal effect as the Freshwater NPS 2020. 

The chief executive of the Ministry for the Environment has certified these copies as correct. 

Wetland delineation protocols

The Wetland Delineation Protocols give a robust method for delineating wetlands based on the United States delineation system. The Freshwater NPS 2020 requires regional councils to have regard to this protocol in cases of uncertainty or dispute about the existence or extent of a natural wetland. This protocol uses three criteria for identifying and delineating wetlands: vegetation, soils, and hydrology. The vegetation and soils components have been adapted to New Zealand conditions and the hydrological component is currently under development. 

New Zealand threat classification manual

The New Zealand Threat Classification System provides a tool for assigning a threat status to candidate taxa. The classification system has been developed to apply equally to terrestrial, freshwater and marine biota. In the Freshwater NPS 2020, the manual is used in the definition of “threatened species” for indigenous species of flora or fauna that rely on water bodies for at least part of their life-cycle. 

River Environment Classification System

The River Environment Classification (REC) System groups rivers and parts of river networks that share similar 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 system groups rivers according to several environmental factors that strongly influence or cause the rivers’ physical and ecological characteristics (climate, topography, geology and land cover). In the Freshwater NPS 2020 it is used in the definition of “specified rivers and lakes” and the sediment attributes’ classification shown in Appendix 2C. 

New Zealand river environment classification user guide

This user guide defines the composition of the River Environment Classification’s climate, source-of-flow (topography), and geology values that make up the sediment attributes classification system.

A user guide for the Macroinvertebrate Community Index 

This report provides an expert view on best-practice use of the Macroinvertebrate Community Index (MCI) for monitoring and reporting on stream health in New Zealand. It contains advice on appropriate application of the MCI in different stream environments, design of monitoring programmes and data analyses (including trend detection). 

Macroinvertebrate metrics for the National Policy Statement for Freshwater Management

This report explores the relationship between macroinvertebrate measures (current and new) and ecosystem health, to develop metrics that can be used when making management and restoration decisions about New Zealand streams. Benthic macroinvertebrates (aquatic insects) are a widely used indicator of freshwater ecosystem health as they respond to human pressures, are taxonomically diverse, and easy to sample.  

New Zealand fish passage guidelines

This guidance document sets out recommended practice for the design of instream infrastructure to provide for fish passage and to set the foundation for the improvement of fish passage management in New Zealand.

Sediment assessment methods

This report describes methods used to assess deposited sediment including the SAM2 method that is prescribed in Table 14 of Appendix 2B of the Freshwater NPS 2020.

Average score per metric: An alternative metric aggregation method for assessing wadeable stream health

This report describes the method used to calculate the ASPM indicator score that is prescribed in Table 15 of Appendix 2B of the Freshwater NPS 2020.