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Impact of managed aquifer recharge on the chemical and isotopic composition of a karst aquifer, Wala reservoir, Jordan

Hydrogeology journal, 2015-08, Vol.23 (5), p.1027-1040 [Peer Reviewed Journal]

Springer-Verlag Berlin Heidelberg 2015 ;ISSN: 1431-2174 ;EISSN: 1435-0157 ;DOI: 10.1007/s10040-015-1233-6

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Title:
Impact of managed aquifer recharge on the chemical and isotopic composition of a karst aquifer, Wala reservoir, Jordan
Author: Xanke, Julian ; Goeppert, Nadine ; Sawarieh, Ali ; Liesch, Tanja ; Kinger, Jochen ; Ali, Wasim ; Hötzl, Heinz ; Hadidi, Khair ; Goldscheider, Nico
Subjects: Aquatic Pollution ; Aquifers ; Chemicals ; Earth and Environmental Science ; Earth Sciences ; Environmental management ; Geology ; Geophysics/Geodesy ; Groundwater ; Hydrogeology ; Hydrology/Water Resources ; Infiltration ; Isotopes ; Karst ; Reservoirs ; Sedimentation ; Surface water ; Wadis ; Waste Water Technology ; Water Management ; Water Pollution Control ; Water Quality/Water Pollution
Is Part Of: Hydrogeology journal, 2015-08, Vol.23 (5), p.1027-1040
Description: Storm-water harvesting and storage via managed aquifer recharge (MAR) is a promising approach to combat water scarcity in semi-arid regions, but poses a challenge for karst aquifers and regions with highly variable water availability. The infiltration of low-mineralized surface water and its impact on highly mineralized groundwater of a karst aquifer was investigated at Wala reservoir in Jordan over a period of approximately 10 years. The results show significant groundwater-level rise in a wellfield, in response to the yearly average infiltration of about 6.7 million m 3 . This corresponds to about 60 % of the yearly average abstraction of about 11.7 million m 3 , confirmed by mixing calculations with tritium. A decreasing trend in infiltration due to sedimentation is observed. Mean groundwater residence times of several thousand years, derived from carbon-14 dating, indicate a large storage capacity of the aquifer. The heterogeneous distribution of the residence times is caused by strong groundwater withdrawals and artificial recharge along with karst-specific aquifer characteristics. Temporal groundwater salinity fluctuations in the wellfield are observed after the first MAR infiltration. Enhanced groundwater flow along the wadi course was demonstrated, which is an important aspect with regards to future MAR projects in similar wadis of the region.
Publisher: Berlin/Heidelberg: Springer Berlin Heidelberg
Language: English
Identifier: ISSN: 1431-2174
EISSN: 1435-0157
DOI: 10.1007/s10040-015-1233-6
Source: ProQuest Central

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Impact of managed aquifer recharge on the chemical and isotopic composition of a karst aquifer, Wala reservoir, Jordan

Springer-Verlag Berlin Heidelberg 2015 ;ISSN: 1431-2174 ;EISSN: 1435-0157 ;DOI: 10.1007/s10040-015-1233-6

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