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Hydrogeological site investigation and economic evaluation to assess the potential of managed aquifer recharge in the Lower Jordan Valley [in press]

Xanke, Julian; Salman, Amer; Al-Karablieh, Emad; Liesch, Tanja; Salameh, Elias; Goldscheider, Nico

Abstract:
Improving water availability and distribution is key to combatting water stress in semi-arid regions. This study presents an approach
that integrates hydrogeological surveys and economic analysis at a pilot site in the eastern Lower Jordan Valley to assess the
potential for managed aquifer recharge (MAR). Based on exploratory drillings, hydraulic tests, water-quality analyses and previous
studies, an appropriate storage space in the alluvial fans along the eastern margin of the valley was found. Average measured
infiltration rates of 9.8 × 10−5 m/s in a gravel pit and average hydraulic conductivity values of 6.8 × 10−5 m/s in the aquifer indicate
that up to 1Mm3/year can be infiltrated and stored underground. It is assumed that water is trapped towards the center of the valley
where the alluvial sediments inter-finger with fine-grained layers. An increase in electrical conductivity values in the same direction
probably indicates irrigation return flow and the presence of evaporitic layers and suggests a water recovery before reaching these
saline zones. Depending on whether the water provided by MAR is used for irrigation or domestic water purpose, an average
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Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 1431-2174, 1435-0157
KITopen-ID: 1000100285
Erschienen in Hydrogeology journal
Vorab online veröffentlicht am 25.11.2019
Schlagwörter Managed aquifer recharge (MAR) Unconsolidated aquifer Hydrogeology Socio-economic aspects Jordan
Nachgewiesen in Web of Science
Scopus
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