Great Artesian Basin Potentiometric Surfaces

Brief description

These grids represent the potentiometric surface of the Cadna-owie - Hooray Aquifer in the Great Artesian Basin at 20 year intervals from 1900-2010. They were interpolated from GAB water table elevations and from observations of hydraulic head obtained from state groundwater databases. Head measurements were density corrected prior to creation of surfaces. Where there were no temperatures supplied with the head measurement to allow correction, temperature was interpolated from dataset 'Great Artesian Basin groundwater temperature' (Geoscience Australia dataset, Catalogue No. 76929, available from http://www.ga.gov.au).The grid surfaces 1900-1920, ?, 2000-2010 account for the possible effects of geological faults on groundwater flow in the GAB. Grids 1900-1920_nf and 2000-2010_nf are without the influence of regional tectonic faulting. Null values assigned as 1.000000e+30. Grid cell size (X, Y) = 5000 m, 5000 m. This GIS data set and metadata was produced by CSIRO for the Great Artesian Basin Water Resource Assessment and used in figures 7.2, 7.3 and 7.4 of 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. Projection is Albers equal area conic, with central meridian 143 degrees longitude, standard parallels at -21 and -29 degrees latitude and latitude of projection's origin at -25. For more information, contact: hris Turnadge Research Projects Officer CSIRO Land and Water Waite Road Urrbrae SA 5064

Lineage

Maintenance and Update Frequency: notPlanned

Statement: METHOD: ASCII grid output from MODFLOW REFERENCES: 1. Queensland groundwater database (water levels), Natural Resources and Mines (2010). Queensland Groundwater database. Qld Government (Department of Natural Resources and Mines) 2. New South Wales groundwater database (water levels) New South Wales. Department of Land and Water Conservation (2010). Pinneena Groundwater Works Version 3.1 [electronic resource]: New South Wales surface water data archive / Department of Land & Water Conservation, NSW Government. 3. South Australia groundwater database (water levels). Department of Environment, Water and Natural Resources SA (2011). WaterConnect Groundwater database [available at https://www.waterconnect.sa.gov.au]. 4. Welsh, W.D. 2000. GABFLOW: A steady state groundwater flow model of the Great Artesian Basin, Bureau Rural Sciences. Canberra. 5. 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. BOUNDARY Boundary was modified from Welsh (2000) and the Great Artesian Basin Water Resource Assessment project boundary (Ransley TR and Smerdon BD (eds), 2012)