Rivers and streams
This report analyses data from the 2023-2024 fish monitoring season.
Published: 20 Dec 2024
Final water quality reports for estuaries, open coast, Hātea River, and tidal creeks.
Published: 19 Dec 2024
Testing national nutrient criteria, and an analysis of predictors of biomass and cover within the region.
Published: 04 Sep 2024
The background science behind the river report cards.
Published: 07 Aug 2024
This is a report on water quality investigation for Raumanga catchment undertaken between 2021 and 2022.
Published: 18 Mar 2024
A three-part report on the potential environmental impacts of high flow harvesting.
This report analyses data from the 2022-2023 fish monitoring season.
Published: 03 Aug 2023
A survey of freshwater insects in Mt Taika forest that recovered eleven conservation interest species.
Published: 25 Jul 2023
An initial search of freshwater conservation interest species as well as NRC’s eDNA samples.
Published: 24 Jul 2023
Final water quality reports for estuaries, open coast, Hātea River, and tidal creeks.
Published: 18 Jul 2023
A report by NIWA on environmental drivers of macroinvertebrate communities in Northland streams.
Published: 05 Jul 2023
This report analyses data from the 2021-2022 fish monitoring season.
Published: 02 May 2023
Report on a review of microbial water quality data.
Published: 01 May 2023
A GIS-based river network model derived from regional LiDAR.
Published: 30 Mar 2023
A report on the state and trends of macroinvertebrate communities in rivers and streams between 2015 and 2019.
Published: 31 Jan 2023
A report on estimating river ecosystem metabolism using continuous dissolved oxygen (DO) data.
Published: 05 Jul 2022
This report details the development of a steady-state water quality model for the Northland Region.
Published: 22 Jan 2021
A snapshot on the current state and trends of water quality and ecological health at 34 Northland River Water Quality Monitoring Network sites.
Published: 13 Nov 2019
A report on the current status, and development of relationships for nutrient limit-setting.
Published: 17 Jul 2019
A summary of iwi and hapū-based tools, frameworks and methods for assessing freshwater environs.
Published: 05 Feb 2019
An update on the water quality in the Taumarere Catchment.
Published: 18 Jan 2018
A snapshot on the current state of water quality and ecosystem health at monitoring sites in Northland.
Published: 23 May 2014
This report identifies the extent and likely cause of poor water quality in the Waipu
Published: 29 May 2012
This report presents the application of the River Values Assessment System to native fisheries in rivers of the Northland Region. (May 2013).
Published: 26 Sep 2013
Water quality and land use trends in the Puwera catchment 2006-2011
Published: 12 Nov 2013
A summary of background water quality sampling from 2002 to 2006, as well as the rainfall, fish and macroinvertebrate monitoring.
Published: 05 Jun 2006
Northland Stream Habitat Assessments 2007 and comparison with 2004 and 2005.
Published: 04 Feb 2008
Results of monitoring various freshwater sites around Northland in 2008 and 2010.
Published: 23 Nov 2011
Results of monitoring various freshwater sites around Northland in 2010 and 2012
Published: 10 Jun 2013
Annual monitoring report on river water quality 2006 - States and Trends
Published: 04 Jun 2007
Annual monitoring report on river water quality 2008-2009
Published: 17 Jun 2011
An update on the current water quality state at the 35 Northland River Water Quality Monitoring Network sites and trends in water quality at 21 sites.
Published: 06 Jul 2011
This report presents results of the 2013 round of the Northland Macroinvertebrate Monitoring Programme.
Published: 13 Nov 2013
This report presents results of the 2012 round of the Northland Macroinvertebrate Monitoring Programme.
Published: 13 Nov 2013
- 2012 Northland Macroinvertebrate Monitoring Programme Intro S2 pdf (PDF 477 KB)
- 2012 Northland Macroinvertebrate Monitoring Programme S3 3 2 pdf (PDF 1.31 MB)
- 2012 Northland Macroinvertebrate Monitoring Programme S3 3 pdf (PDF 1.81 MB)
- 2012 Northland Macroinvertebrate Monitoring Programme S4 Appendices pdf (PDF 553 KB)
This report presents the results of the 2011 round of the ‘Northland Macroinvertebrate Monitoring Programme’.
Published: 08 Nov 2011
This report presents the results of the 2010 round of the ‘Northland Macroinvertebrate Monitoring Programme’.
Published: 22 Jun 2011
This report presents the results of the 2009 round of the ‘Northland Macroinvertebrate Monitoring Programme’.
Published: 22 Jun 2011
This report presents the results of the 2008 round of the ‘Northland Macroinvertebrate Monitoring Programme’.
Published: 22 Jun 2011
Report by Stark Environmental Limited.
Published: 30 Jul 2014
River Hydraulic Habitat Simulation assessment for the Waitangi, Mangere and Hatea catchments.
Published: 08 Mar 2016
A report on introduced freshwater fish currently occurring in Northland.
Published: 23 Feb 2016
Review of water quality information for Otiria Stream, Moerewa.
Published: 03 Sep 2008
A study to identify whether there is a need to monitor Northland rivers for pesticides.
Published: 04 Feb 2008