Author:Laura Buckthought, Martin W Neale
Source:Auckland Council Research and Evaluation Unit, RIMU
The purpose of this report is to assess the current state of river water quality across the Auckland region and to report on trends and indicate whether water quality has improved, remained the same or deteriorated over the reporting period.
Trend analysis was conducted on all sites that had at least five years of monthly data. There are 6 sites with 6 years of accumulated data and 23 sites with at least 10 years of data.
- This report provides a summary of the data (the “state”) across all sites included in the analysis and, where appropriate, compared to relevant guidelines and standards.
- This report also provides a trend analysis for each parameter at a regional level, a land use level and an individual site level.
Since the inception of the River Water Quality Programme, 22 reports have been produced on the state of river water quality in the Auckland region.
The last technical report on state and trends of water quality in the Auckland region was prepared by Scarsbrook in 2006* which included an analysis of state and trends from 27 sites from 1986 to 2007. In future, such reports will be published every five years.
Auckland Council technical report TR2016/008
* Scarsbrook, M.R., 2006. State and trends in the National Water Quality Network (1989-2005). Ministry for the Environment