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Water Quality and Catchments Roundtable

From July-December 2014, six Roundtables gathered information and reported back to the Stakeholder Working Group (SWG)

The Water Quality and Catchments Roundtable's aimed to

  • identify levels of contaminants, nutrients, pathogens and sedimentation flowing into the Gulf from land
  • impact on gulf ecology
  • impact on users


This Roundtable's findings presented to the SWG can be viewed below. Please sign up for our monthly newsletters to stay in the loop.



SWG members Raewyn Peart, Conall Buchanan (co-chairs), Dirk Sieling, Tame Te Rangi and Alison Henry were members of the Water Quality and Catchments Roundtable, along with other invited participants with knowledge and expertise in farming, forestry, marine farming, recreational interests, environmental interests, commercial fishing and infrastructure supporting communities.

Raewyn Peart Roundtable co-chair/SWG
Conall Buchanan Roundtable co-chair/SWG
Dirk Sieling SWG
Tame Te Rangi SWG
Stuart King Landowner representative
Phillippa Fourie Landowner representative
Gwyn Morgan Landowner representative
Kelvin Meredith Forestry
Jim Dollimore Marine farming
Pauline Clarkin, Iwi
Doug Elder Recreational interests
Peter Jackson Environmental interests
Garry Maskill Infrastructure
Phil Clow Commercial fishers



The Water Quality and Catchments Roundtable was advised by experts including:

  • an oceanographer, marine ecologist and sedimentation scientist from NIWA (the National Institute of Water and Atmospheric Research)
  • a Hauraki Gulf Marine Park scientist/researcher
  • an advisor with mātauranga Māori expertise
  • a water catchments scientist working in the dairy industry.


Technical Reports

Technical reports to the Water Quality & Catchment Roundtable are loaded below.

Document titleType
Technical Report 1 - Collation of Background Information PDF [1MB]
Technical Report 2 - Synthesis of Issues and Options PDF [783KB]


Advisor presentations to the Water Quality and Catchments Roundtable are loaded below.

Month Document titleAuthorType
February 2015  Water Quality and Catchments Roundtable handover

Water Quality and Catchments Roundtable

November 2014 Healthy Catchment; Healthy Harbour - A Coromandel Story

Emily O'Donnell
Area Manager - Coromandel
Waikato Regional Council

October 2014 Waste Water Network Operation

Jonathon Piggot
Operations Coordinator

  Stormwater Management Claudia Hellberg
Stormwater Strategic Planning Team Leader
Auckland Council
September 2014 Urban Stormwater Impacts to Marine Receiving Environments Earl Shaver
Aqua Terra International Ltd 
  Managing the effects of on-site wastewater systems Phil Brown
Land and Water Advisory Manager 
Auckland Council 
  Dairy industry good practice for enhancing water quality Tom Stephens
Water Quality Scientist

Compound specific stable isotopes (CSSI) and sediment source tracking in NZ

Dr Max Gibbs
Water Quality Scientist

  Terrigenous fine sediments - sources, fate and rates in the Hauraki Gulf Mr Andrew Swales / Dr Max Gibbs
Coastal and Estuarine Physical Processes Scientist / Water Quality Scientist
August 2014 Hauraki Gulf Ecosystem: Productivity, Drivers and Stressors Dr John Zeldis
Principal Scientist - Marine Ecology
  Plant nutrients in the Hauraki Rivers and Southern Firth of Thames Bill Vant
Waikato Regional Council 
  Land based sediment impacts on estuarine environments

Dr Judi Hewitt
Principal Scientist - Marine Ecology



Hauraki Gulf Forum Ministry for Primary Industries  Department of Conservation (DOC) Waikato Regional Council Auckland Council