Coastal water quality

Water quality reports for estuaries, open coast, Hātea River, and tidal creeks.
Published: 08 Jun 2023
Water quality reports for estuaries, open coast, Hātea River, and tidal creeks.
Published: 14 Jul 2022
A summary report of information for the Hokianga Harbour catchment using results from a regional assessment of Northland’s steady state water quality.
Published: 18 Jan 2021
Results from monitoring undertaken between January 2018 and December 2020.
Published: 09 Sep 2022
Results from monitoring undertaken between January 2013 and December 2017.
Published: 10 Nov 2021
This report presents the results from monitoring undertaken at 42 sites by the council between January 2010 and December 2014.
Published: 02 Oct 2017
Interpreting Northland’s Coastal Water Quality Monitoring Results Under Different Tide Conditions : Cornelisen, Jiang and Griffiths - 2011.
Published: 11 Sep 2014
A research report on the significant quantities of algae washed ashore at Waipu in Northland.
Published: 06 Apr 2021
A report identifying sources of faecal contamination in coastal waters and shellfish in Northland's waters in 2010.
Published: 22 Nov 2012
This report characterises and quantifies microplastic distribution in sand sediments from the Northland region.
Published: 30 Mar 2023
A survey to consider the transplant of cockles from donor sites to Takahiwai.
Published: 10 Nov 2021
A review of existing coastal water quality classifications and recommendations for inclusion in Northland’s new Regional Plan.
Published: 02 Oct 2017
Report from the Cawthron Institute on consent conditions for dredging activities in Northland Harbours.
Published: 10 Nov 2021
Results from coastal water quality monitoring undertaken by the council since January 2000 up to December 2010.
Published: 02 Dec 2014
Results from of a monitoring project to better understand the health of the Tākou Estuary.
Published: 10 Nov 2021
An assessment of the impacts of stormwater outfalls located in waterways draining into the Whangārei Harbour.
Published: 10 Sep 2020
This report describes a review of existing information on contaminant sources in the catchment of the upper harbour.
Published: 05 Jul 2022