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National reports

Reports to assist the development of Gisborne's Freshwater Plan

Implications of the National Environment Standard (NES) ecological flows for Gisborne District Council - 2009

Ned Norton (NIWA)
Interim limits on the alteration of flows in rivers and levels in groundwater systems.
Implications of the national environmental standard (NES) ecological flows for GDC (847kb 36 pages)

 

Water quality in New Zealand - land use and nutrient pollution - November 2013

Parliamentary Commissioner for the Environment
However we use our land, the quality of the water in our rivers and streams, lakes, estuaries and aquifers is affected. This report is focused on how current changes in land use are affecting the amounts of nitrogen and phosphorus that end up in fresh water.
Water quality in New Zealand - land use and nutrient pollution (4.5mb 82 pages)

 

Water quality in New Zealand - Understanding the science - March 2012

Parliamentary Commissioner for the Environment
The aim of this report is to provide a guide to water quality science covering those aspects which are most useful for the many New Zealanders who are engaged in, and concerned about, various aspects of this high profile environmental issue. Water quality science is indeed complicated, much is unknown, and the devil often really is in the detail.
Water quality in New Zealand - Understanding the science (3mb 93 pages)

 

Water quality in New Zealand - Understanding the science - Update report on original investigation - June 2013

Parliamentary Commissioner for the Environment
This update report describes the response to the 2012 report; and explains how it has been used.
Water quality in New Zealand - Understanding the science - Update report to original investigation March 2012 (299kb 8 pages)

 

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