Groundwater Reports

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Groundwater Reports

Technical Report

Age and source of Canterbury plains groundwater (3115 KB)
This report applies hydrochemical methods (chlorofluocarbons (CFCs), tritium, oxygen-18) to determine the ages and sources of groundwater in the Canterbury Plains.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
Aquifer Test Guidelines - July 2008 (706 KB)
Best practice guidelines for the design, analysis and reporting of aquifer tests and is a revision of 1998 Aquifer Test Guidelines.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
Christchurch-West Melton groundwater quality: a review of groundwater quality monitoring data from January 1986 to March 2002 (6659 KB)
This report presents the analysis and interpretation of groundwater quality data collected over the last 16 years in the Christchurch-West Melton groundwater management zone.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
- Part B - Page 80 to 141 (4231 KB)
Groundwater Allocation Limits: Land-based Recharge Estimates (4878 KB)
This report describes the methodology adopted for estimates of aquifer recharge, and provides land-based recharge estimates (rainfall plus irrigation) for 21 of the 30 Groundwater Allocation Zones defined in the NRRP.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
Groundwater quality monitoring - Annual Summary, 2001-02 (1675 KB)
This report summaries the analytical results and records all samples collected by the groundwater quality-monitoring programme in the 2001/02 financial year.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
Groundwater resources associated with the Rakaia riparian sub-area: assessment of technical and allocation issues (4136 KB)
Published: 01/08/2009 Type: Technical Report
Guidelines for the Assessment of Groundwater Extraction Effects on Stream Flow - 2001 (4997 KB)
This technical guideline has been prepared to help the recognition of situations where significant stream depletion effects may occur and to provide tools that quantify the effects of groundwater abstraction on surface waterways.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
Land-surface recharge and groundwater dynamics - Rakaia-Ashburton Plains (4836 KB)
Land-surface recharge (LSR), river recharge and groundwater abstraction are water budget components which influence the dynamic behaviour of the groundwater system. This study describes the occurrence of groundwater across the Rakaia-Ashburton Plains, and uses an eigenmodel to explore the relationship between these drivers and the observed groundwater dynamic behaviour.
Author: Michael J. Thorley, Vincent J. Bidwell, David M. Scott Published: 03/02/2010 Type: Technical Report
Nitrate concentrations in Canterbury groundwater - a review of existing data (2634 KB)
This report reviews and analysesthe existing groundwater nitrate data held by Environment Canterbury.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
Nitrate contamination of groundwater Ashburton-Rakaia plains report (1194 KB)
This report presents the results of the three separate investigations into nitrate concentrations in groundwater in the lower Ashburton-Rakaia plains.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
NRRP Groundwater Allocation Policy Implementation - Analysis and Implications (354 KB)
This report outlines the results of an analysis using the policies and rules for the setting of groundwater allocation limits in Chapter 5 of the NRRP and to identify the approach for processing consent applications to abstract groundwater.
Author: Environment Canterbury Published: 21/08/2009 Type: Technical Report
Vertical flow in Canterbury groundwater systems and its significance for groundwater management (3297 KB)
This technical report has been prepared for a wide-ranging audience including technical experts, water resource managers and decision makers. The report investigates the degree of interaction and connection between sedimentary deposits located at different depth intervals in Canterbury.
Author: Hilary Lough and Howard Williams Published: 11/11/2009 Type: Technical Report