Groundwater/surface water exchange and its influence on stable water isotopic signatures along the Darling River, NSW, Australia

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dc.contributor.authorMeredith, KTen_AU
dc.contributor.authorHollins, SEen_AU
dc.contributor.authorHughes, CEen_AU
dc.contributor.authorCendón, DIen_AU
dc.contributor.authorStone, DJMen_AU
dc.date.accessioned2022-01-18T01:09:17Zen_AU
dc.date.available2022-01-18T01:09:17Zen_AU
dc.date.issued2007-09-17en_AU
dc.date.statistics2021-11-05en_AU
dc.description.abstractStable water isotopes (SWIs) have been analysed in surface waters collected from the Darling River over the past five years (2002 to 2007). Run-of-River sampling results were compared with temporal SWI data from three gauging stations located along the river. Darling River surface water samples are generally enriched in heavy isotopes due to evaporation. Partitioning of distinctly labelled isotopic waters such as enriched surface waters and depleted groundwaters allowed for the identification of groundwater/surface water exchange. Preliminary results showed that large flood events recharge the shallow aquifer with fresh-enriched waters and during low flow conditions, saline-depleted groundwaters rebound towards the river. Consequently, during drought periods saline groundwaters discharge into the river system. The flux of saline groundwaters into the surface water system was found to not only increase the salinity of scarce fresh water supplies but also create the desired environmental conditions for cyanobacteria blooms in the Darling River.en_AU
dc.identifier.citationMeredith, K., Hollins, S., Hughes, C., Cendón, D., & Stone, D. (2007). Groundwater/surface water exchange and its influence on stable water isotopic signatures along the Darling River, NSW, Australia. Paper presented to the XXXV IAH Congress of the International Association of Hydrogeologists, "Groundwater and Ecosystems Lisbon 2007", 17-21 September 2007, (pp. 34).en_AU
dc.identifier.conferenceenddate21 September 2007en_AU
dc.identifier.conferencenameXXXV IAH Congress of the International Association of Hydrogeologists, 'Groundwater and Ecosystems Lisbon 2007'en_AU
dc.identifier.conferenceplaceLisborn, Portugalen_AU
dc.identifier.conferencestartdate17 September 2007en_AU
dc.identifier.isbn978-989-95297-2-4en_AU
dc.identifier.pagination34en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12697en_AU
dc.language.isoenen_AU
dc.publisherInternational Association of Hydrogeologistsen_AU
dc.subjectGround wateren_AU
dc.subjectSurface watersen_AU
dc.subjectStable isotopesen_AU
dc.subjectRiversen_AU
dc.subjectNew South Walesen_AU
dc.subjectAustraliaen_AU
dc.subjectSamplingen_AU
dc.subjectSaline aquifersen_AU
dc.subjectAquifersen_AU
dc.subjectCyanobacteriaen_AU
dc.subjectEnvironmenten_AU
dc.titleGroundwater/surface water exchange and its influence on stable water isotopic signatures along the Darling River, NSW, Australiaen_AU
dc.typeConference Abstracten_AU
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