Journal
HYDROGEOLOGY JOURNAL
Volume 19, Issue 3, Pages 719-726Publisher
SPRINGER
DOI: 10.1007/s10040-011-0714-5
Keywords
Australia; Murray-Darling Basin; Groundwater statistics; Salinity
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Salt accessions from artesian and sub-artesian bores have been calculated for the Queensland Murray-Darling Basin (QMDB), Australia, using available water chemistry, licensing data and a number of assumptions. The majority (similar to 90%) of the salt accessions come from sub-artesian bores used for irrigation (including intensive livestock) purposes. Historically, free-flowing artesian bores in the west of the basin have contributed large quantities of salt, but their contributions have declined with capping and piping of these bores. The highest salt yields (t/km(2)) are in the Condamine catchment, which also contains 70% of the bores in the region. Groundwater salt accessions are considerably less than atmospheric (rainfall) accessions in all catchments except the Condamine. Further expansion of the coal seam gas industry may substantially increase non-cyclic groundwater accessions, further reducing catchment salt export/import ratios.
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