The dataset was derived by the Bioregional Assessment Programme. The parent datasets are identified in the Lineage field in this metadata statement.
Composite temperature and density corrected potentiometric surface contours for the Cadna-owie-Hooray and equivalents Aquifer and inferred regional groundwater flow directions comprises of two separate data layers; A: Potentiometric surface contours B: Regional groundwater flow direction arrows - Inferred The composite potentiometric surface contours are modified from (Ransley & Smerdon 2013) (figure 7.4 - Modern (Circa 2010) potentiometric surface) and Love et.al. (eds) 2013 (Figure 5.14 Present-day corrected potentiometric surface of the J aquifer for the variable temperature assumption) which was generated from a surface grid that is calculated from temperature and density corrected waterbore head measurements obtained between 2000 and 2010. The regional flow is inferred to occur down hydrualic gradient perpendicular to groundwater head isopotential contours. This dataset and associated metadata can be obtained from www.ga.gov.au, using catalogue number 81688. REFERENCES: Love et al. (eds) 2013, Allocating Water and Maintaining Springs in the Great Artesian Basin. Volume II: Groundwater Recharge , Hydrodynamics and Hydrochemistry of the Western Great Artesian Basin, National Water Commission, Canberra Ransley TR and Smerdon BD (eds) (2012) Hydrostratigraphy, hydrogeology and system conceptualisation of the Great Artesian Basin. A technical report to the Australian Government from the CSIRO Great Artesian Basin Water Resource Assessment. CSIRO Water for a Healthy Country Flagship, Australia. Ransley, T., Radke, B., Feitz, A., Kellett, J., Owens, R., Bell, J. and Stewart, G., 2015. Hydrogeological Atlas of the Great Artesian Basin. Geoscience Australia. Canberra. [available from www.ga.gov.au using catalogue number 79790]
Theses grids were made to determine the difference between potentiometric surfaces to assess aquitard inegrity.
Bore data from sourced data- see lineage.
Tools used: ESRI tools Topo to raster to create the GRIDS and contours:
Raster Calculator tool used to: subtract younger stratigraphic unit from older stratigraphic unit.
Bioregional Assessment Programme (2015) Potentiometric head difference v01. Bioregional Assessment Derived Dataset. Viewed 07 December 2018, http://data.bioregionalassessments.gov.au/dataset/6c212a1a-658c-41de-92a7-6054349a848b.
Derived From QDEX well completion reports (WCR) - Galilee v01
Derived From Galilee Water Accounts Table: volumes and purposes