Reports and Special Investigations
As well as the ongoing functions of monitoring the status of the region's groundwater resources, Marlborough District Council staff are working on one-off projects related to particular issues.
Current projects include:
- The focus of Marlborough District Council investigations through to 2019 will be the hydraulic interaction between the Wairau Aquifer and the Wairau River in the recharge reach between the Waihopai River confluence and State Highway 1 at Tuamarina.
- The first priority is to quantify the recharge rate, and in particular, whether it varies in time or space. Once there is a representative set of abstraction records for different soils, the Wairau Aquifer will be modelled to provide a platform for refining the safe yield and modelling nutrient loads.
- Other areas of hydrological research and investigation by Marlborough District Council are:
- Nutrient leaching to groundwater from land use
- Applying science to develop policy and rules for water management
Groundwaters of Marlborough
Groundwaters of Marlborough is a book summarising what is known about Marlborough's underground water resources. Hard copies are available for purchase from Marlborough District Council's Blenheim and Picton offices, or a copy can be downloaded for free from this website.
- Table of Contents (PDF, 60.8KB)
- Chapter 1 - Importance of Freshwater (PDF, 319.8KB)
- Chapter 2 - What is Groundwater (PDF, 196.7KB)
- Chapter 3 - History of Groundwater Use in Marlborough (PDF, 929.7KB)
- Chapter 4 - Groundwater Resource Investigations (PDF, 517.9KB)
- Chapter 5 - Locating and Accessing Groundwater (PDF, 1.2MB)
- Chapter 6 - Well Construction Methods (PDF, 483.4KB)
- Chapter 7 - Monitoring Groundwater Resources (PDF, 3.9MB)
- Chapter 8 - Regional Hydrogeology (PDF, 1.2MB)
- Chapter 9 - Aquifer Hydraulic Properties (PDF, 1.2MB)
- Chapter 10 - Aquifer Testing (PDF, 701.9KB)
- Chapter 11 - Groundwater Chemistry and Quality (PDF, 1.5MB)
- Chapter 12 - Environmental Isotopes (PDF, 1.6MB)
- Chapter 13 - Modelling Groundwater Behaviour (PDF, 429.2KB)
- Chapter 14 - Influences on Groundwater (PDF, 1.3MB)
- Chapter 15 - Groundwater and Surfacewater Interaction (PDF, 980.5KB)
- Chapter 16 - Wairau Plain Regional Groundwater Flow (PDF, 942.8KB)
- Chapter 17 - Wairau Aquifer (PDF, 1.7MB)
- Chapter 18 - Wairau Aquifer Coastal Sector (PDF, 636.8KB)
- Chapter 19 - Spring Creek (PDF, 1.3MB)
- Chapter 20 - Blenheim Urban Springs (PDF, 645.3KB)
- Chapter 21 - Deep Wairau Aquifer (PDF, 660.7KB)
- Chapter 22 - Woodbourne Sector (PDF, 579.3KB)
- Chapter 23 - Taylor River Related Aquifers (PDF, 1MB)
- Chapter 24 - Riverlands Aquifer (PDF, 1.2MB)
- Chapter 25 - Southern Springs (PDF, 920.2KB)
- Chapter 26 - Rarangi Shallow Aquifer (PDF, 1MB)
- Chapter 27 - Southern Valleys Catchments (PDF, 195.4KB)
- Chapter 28 - Benmorven Aquifer (PDF, 570.1KB)
- Chapter 29 - Fairhall-Brancott Valley Aquifers (PDF, 1.1MB)
- Chapter 30 - Omaka-Hawkesbury Valley Aquifers (PDF, 484.7KB)
- Chapter 31 - Omaka River Aquifer (PDF, 1.1MB)
- Chapter 32 - Lower Waihopai Aquifer (PDF, 598.5KB)
- Chapter 33 - Wairau Valley Groundwater Resources (PDF, 979.5KB)
- Chapter 34 - Wairau Lagoon Catchment Groundwater (PDF, 381.4KB)
- Chapter 35 - Awatere and Blind River Catchments (PDF, 130.5KB)
- Chapter 36 - Flaxbourne and Waima/Ure Catchments (PDF, 445.6KB)
- Chapter 37 - Marlborough Sounds/Rai/Pelorus River Valley (PDF, 248.7KB)
- Chapter 38 - Northbank Riparian Aquifers (PDF, 543KB)
- Chapter 39 - Are Are Creek and Kaituna Valley (PDF, 529.8KB)
- Chapter 40 - Havelock Aquifer and Kaituna River (PDF, 495.7KB)
- Chapter 41 - Linkwater Aquifer (PDF, 1.2MB)
- Chapter 42 - Tuamarina River Valley and Picton (PDF, 463KB)
- Chapter 43 - Into the Future, Glossary of Terms, Abbreviations and Units (PDF, 57KB)
Groundwater Related Reports
Marlborough District Council staff periodically release technical publications documenting investigations. In addition, consultants are commissioned from time to time to prepare reports requiring specialist expertise. Once these reports have been presented to Council they are available to the public.
Each year, Marlborough District Council staff prepare separate annual state of the aquifers reports on groundwater quality and groundwater quantity. These reports are condensed into scorecards.
The reports are presented to Marlborough District Council in July (groundwater quality) and October (groundwater quantity) each year. They are valid for the following 12 months before they are updated based on more recent information. Reports are set out below, in order of publication.
Annual Groundwater Monitoring Report Summary
- 2015 Monitoring Summary - Groundwater Quality (PDF, 575.4KB)
- 2014 Monitoring Summary - Groundwater Quality (PDF, 2.5MB)
- 2013 Monitoring Summary - Groundwater Quality (PDF, 830.7KB)
- 2012 Monitoring Summary - Groundwater Quality (PDF, 2MB)
- 2011 Monitoring Summary - Groundwater Quality (PDF, 337.2KB)
- 2010 Monitoring Summary - Groundwater Quality (PDF, 328.5KB)
- 2013 Monitoring Summary - Groundwater Quantity (PDF, 582.7KB)
- 2012 Monitoring Summary - Groundwater Quantity (PDF, 2.2MB)
- 2011 Monitoring Summary - Groundwater Quantity (PDF, 771.5KB)
- 2010 Monitoring Summary - Groundwater Quantity (PDF, 305KB)
Yearly Reports
2019
- National Survey of Pesticides and Emerging Organic Contaminants (EOCs) in Groundwater 2018 (PDF, 1.8MB)
- From Rain through River Catchment to Aquifer: The Flow of Water through the Wairau Hydrologic System pages 1-23 (PDF, 4.2MB)
- From Rain through River Catchment to Aquifer: The Flow of Water through the Wairau Hydrologic System pages 24-34 (PDF, 4.9MB)
- From Rain through River Catchment to Aquifer: The Flow of Water through the Wairau Hydrologic System pages 35-45 (PDF, 5.5MB)
- From Rain through River Catchment to Aquifer: The Flow of Water through the Wairau Hydrologic System pages 46-50 (PDF, 4.2MB)
- From Rain through River Catchment to Aquifer: The Flow of Water through the Wairau Hydrologic System pages 51-56 (PDF, 3.3MB)
- From Rain through River Catchment to Aquifer: The Flow of Water through the Wairau Hydrologic System pages 57-83 (PDF, 5.5MB)
- 2D hydraulic modelling of a braided river system using aerial imagery for water depth mapping: The Wairau River, New Zealand by Mohamed Adil Osman Elbashir (PDF, 3.8MB)
2014 GNS Science Rai-Pelorus Catchment Groundwater Storage Report - a copy is available from Peter Davidson, Marlborough District Council, phone: 03 520 7400 or email: peter.davidson@marlborough.govt.nz
2008
- Are Are Creek Baseline Hydrology Report - August 2008 (PDF, 7.9MB)
- Coastal Wairau Aquifer Model Simulation Report - February 2008 (PDF, 3.2MB)
- Deep Wairau Aquifer Abstraction and Level Review - March 2008 (PDF, 466.7KB)
- Deep Wairau Aquifer Geochemistry Review - August 2008 (PDF, 506.5KB)
- Deep Wairau Aquifer Isotope Hydrology Review - August 2008 (PDF, 911.5KB)
- Omaka River Catchment and Aquifer Technical Report - January 2008 (PDF, 3.2MB)
- Riverlands Groundwater Model and Aquifer Sustainability Assessment - April 2008 (PDF, 2MB)
- Riverlands Groundwater Resource Summary - September 2008 (PDF, 4.1MB)
- Southern Springs Hydrology Review and Data Update - February 2008 (PDF, 1.2MB)
- Stream Depletion Report Stage 2 - July 2008 (PDF, 2.2MB)
- Wairau Plains Groundwater Age and Origin Review - May 2008 (PDF, 4.8MB)
2007
- Flaxbourne River Catchment Isotope Hydrology Report - April 2007 (PDF, 4.3MB)
- Rarangi Shallow Aquifer Model Report - January 2007 (PDF, 811.9KB)
- Rarangi Water Permit Application U061185 Technical Report - February 2007 (PDF, 2.2MB)
- Rarangi Wetlands Hydrology Report - March 2007 (PDF, 2.4MB)
- Wairau Valley Aquifer Technical Report - July 2007 (PDF, 3.1MB)
2005
- Environmental Effects of CCA Treated Posts Stage 2 Report - October 2005 (PDF, 1.5MB)
- Grape Plant Irrigation Efficiency Research Report - September 2005 (PDF, 554.5KB)
- Southern Springs Groundwater Hydrology Report - May 2005 (PDF, 1.8MB)
- Tuamarina River Valley Hydrology and Water Management Issues Report - May 2005 (PDF, 2MB)