The dataset was derived by the Bioregional Assessment Programme from "QLD DNRM Hydrochemistry with QA/QC" and "NSW Office of Water Groundwater Quality extract 28_nov_2013" data provided by the Qld DNRM and NSW Office of Water. The source datasets are identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.
The dataset contains the outputs of a multivariate statistical analysis conducted on groundwater chemistry data for different river basins or sub-regions within the CLM bioregion. The analysis was conducted using Statgraphics software. Only samples that passed the QA/QC checks (e.g. charge balances within +-5%) were included in the analysis.
The original datasets were clipped to the CLM bioregion. After an initial data quality check, only those samples that met the criteria (e.g. charge balance between + and - 5%) were included in the multivariate statistical analysis. Multivariate statistical analysis was conducted on the remaining dataset (i.e. those samples that did not meet the QA/QC criteria removed), resulting in different groundwater chemistry groups.
The methodology is described in more detail by Raiber et al., (2012).
M Raiber, PA White, CJ Daughney, C Tschritter, P Davidson (2012). Three-dimensional geological modelling and multivariate statistical analysis of water chemistry data to analyse and visualise aquifer structure and groundwater composition in the Wairau Plain, Marlborough District, New Zealand, Journal of Hydrology 436, 13-34
Bioregional Assessment Programme (2014) CLM - Groundwater Chemistry outputs from multivariate statistics. Bioregional Assessment Derived Dataset. Viewed 28 September 2017, http://data.bioregionalassessments.gov.au/dataset/4c128b86-1089-4ba9-85f8-76bbd65db396.
Derived From NSW Office of Water - Groundwater quality extract
Derived From QLD DNRM Hydrochemistry with QA/QC