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Analysis of water quality in New Zealand lakes and rivers

Publication date:  December 2017
Publication reference number:  CR 297

This report analyses the state of freshwater quality for the past 25 years based on a national scale model. 

It provides information on:

  • the current state and trends of lakes and rivers in New Zealand relative to the National Policy Statement for Freshwater Management bottom lines and guideline values
  • pressures that may affect water quality over time
  • how these pressures relate to water quality.