Great Artesian Basin - Alluvium Water level

Brief description

This data set represents recent water level measurements as well as in the Quaternary alluvial aquifer in the Surat sub-basin and demarcates areas where water levels in the Quaternary alluvium are higher than the regional water table in the uppermost GAB aquifer, and areas where the GAB regional water table is coplanar with or higher than the water levels in the alluvium. There are two data layers, A: Alluvium water table elevation contours, B: Relationships between Alluvium water levels and GAB water table levels. This dataset and associated metadata can be obtained from www.ga.gov.au, using catalogue number 81674. REFERENCES: 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] Queensland groundwater database (water levels), Natural Resources and Mines (2010). Queensland Groundwater database. Qld Government (Department of Natural Resources and Mines) 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.

Lineage

Maintenance and Update Frequency: notPlanned

Statement: METHOD: Contours Alluvium contours interpreted at 1:250 000 scale by hand drawing on transparencies using data sources as well as expert geological and hydrogeological knowledge. Interpretations were then scanned, georeferenced and digitised into vector format using ESRI ArcGIS software. Relationship features (polygons) Relationship features interpreted at 1:250 000 scale by hand drawing on transparencies using data sources as well as expert geological and hydrogeological knowledge. Interpretations were then scanned, georeferenced and digitised into vector format using ESRI ArcGIS software. This is a regional interpretation for mapping at approximately 1:1 000 000 to produce a broad scale overview, and examination of small areas by collecting extra data is most likely to produce results that differ from this regional interpretation. QAQC: Data has undergone a QAQC verification process in order to capture and repair attribute and geometric errors. SOFTWARE: All modifications/edits and geoprocessing were performed using ESRI ArcGIS 10 software.