Hydrogeochemical zonation of groundwater in the Botany Sands aquifer, Sydney

The groundwater quality in the Botany Sands aquifer has deteriorated in the last 50 years due to contamination associated with industrial developments, urbanisation and over-abstraction from the aquifer. This paper presents a conceptual hydrogeochemical model for the Botany Sands Aquifer based upon the analysis of newly acquired field data, supplemented by published data, and identifies three different zones in a hydrogeochemical cross-section along the Lakes Valley. 1. A Northern Zone is characterised by groundwater with an average TDS of 136 mg/L and a chemical type of Cl-HC03-S04-Ca-Na. This zone occurs in Centennial Park and Moore Park, extending south to Kingsford and Rosebery. The chemical composition of groundwater in this zone is the result of rain-water recharge mixed with storm-water run off from the surrounding urban areas. 2. A Middle Zone is characterised by groundwater with an average TDS of 104 mg/L and a chemical type Cl-S04-HC03-Na-Ca arising from direct rain-water recharge through Holocene sand dunes in the Eastlakes and Pagewood areas. The middle zone groundwaters are characterised by the uniformity of their chemical composition. 3. A Southern Zone is characterised by groundwater with an average TDS of 461 mg/L and a chemiCal type Cl-HCO3-S04-Na-Ca . The chemical composition of groundwater in the Southern Zone is highly variable, occurring as the result of mixing between the Middle and Northern Zone waters flowing southwards, with significant additional point and diffuse sources of contamination from industrial processes. Identification of these zones allows the development of an improved model of the groundwater resource in the Botany area.

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Date (Publication)
1993-01-01T00:00:00
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Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81349

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Australian Geological Survey Organisation

 Canberra
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Acworth, I.

 1
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Jankowski, J.

 2
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AGSO Journal of Australian Geology and Geophysics

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14:2-3:193-199

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Commonwealth of Australia (Geoscience Australia)
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Creative Commons Attribution 4.0 International Licence

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2018-11-01T00:00:00
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Australian Government Security ClassificationSystem

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2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified

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urn:uuid/fae9173a-7122-71e4-e044-00144fdd4fa6

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English
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Commonwealth of Australia (Geoscience Australia)

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AGSO BMR Journal

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eCatId/81349

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2018-04-20T06:07:50
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2014-06-03T00:00:00

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ISO 19115-1:2014

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ISO 19115-3

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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

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Version 2.0, September 2018

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https://pid.geoscience.gov.au/dataset/ga/122551

 
 

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