Simulation-optimization approach for evaluating the feasibility of managed aquifer recharge in the Samail Lower Catchment, Oman

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cg.contributor.affiliationInternational Water Management Instituteen
cg.contributor.crpWater, Land and Ecosystems
cg.coverage.countryOman
cg.coverage.iso3166-alpha2OM
cg.coverage.regionMiddle East
cg.coverage.regionWestern Asia
cg.identifier.doihttps://doi.org/10.1061/(asce)wr.1943-5452.0000588en
cg.issn0733-9496en
cg.issn1943-5452en
cg.issue2en
cg.journalJournal of Water Resources Planning and Managementen
cg.volume142en
dc.contributor.authorEbrahim, Girma Yimeren
dc.contributor.authorJonoski, A.en
dc.contributor.authorAl-Maktoumi, A.en
dc.contributor.authorAhmed, M.en
dc.contributor.authorMynett, A.en
dc.date.accessioned2015-12-18T10:24:51Zen
dc.date.available2015-12-18T10:24:51Zen
dc.identifier.urihttps://hdl.handle.net/10568/69370
dc.titleSimulation-optimization approach for evaluating the feasibility of managed aquifer recharge in the Samail Lower Catchment, Omanen
dcterms.abstractThis article presents a simulation-optimization approach for evaluating the feasibility of managed aquifer recharge (MAR) in the Samail Lower Catchment, Oman. The objective is to provide a maximum recharge and extraction rate through MAR in an annual cycle of two successive injection and recovery periods, while meeting operational and system constraints such as water level, gradient, and travel time. Three groundwater management problems were solved by coupling a simulation model with successive linear programming (SLP) and the nondominated sorting genetic algorithm (NSGA-II) multiobjective genetic algorithm. Sensitivity analysis was also completed to examine the overall response of the simulation-optimization results to changes in hydraulic conductivities and maximum injection rates. Results using the SLP algorithm showed that the total volume of injected water for 4 months of injection without recovery is as high as 8 × 106 m3, and the total recovered volume of water for 4months injection and 8 months recovery is approximately 5.3 × 106 m3, giving a total recovery efficiency of approximately 66%. For the same setup the NSGA-II algorithm derived the entire nondominated front of solutions for two conflicting objectives: maximizing recovery rate and maximizing minimum groundwater head close to the sea (for preventing seawater intrusion). This algorithm includes travel time constraints directly in the optimization process. In conclusion, the proposed approach provides a cost-effective means to evaluate MAR in a coastal aquifer.en
dcterms.accessRightsLimited Access
dcterms.bibliographicCitationEbrahim, Girma Yimer; Jonoski, A.; Al-Maktoumi, A.; Ahmed, M.; Mynett, A. 2015. Simulation-optimization approach for evaluating the feasibility of managed aquifer recharge in the Samail Lower Catchment, Oman. Journal of Water Resources Planning and Management, 16p. (Online first). doi: https://doi.org/10.1061/(ASCE)WR.1943-5452.0000588en
dcterms.issued2016-02
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherAmerican Society of Civil Engineersen
dcterms.subjectaquifersen
dcterms.subjectgroundwater rechargeen
dcterms.subjectgroundwateren
dcterms.subjectwater levelsen
dcterms.subjectwater budgeten
dcterms.subjectwater supplyen
dcterms.subjectcatchment areasen
dcterms.subjectdamsen
dcterms.subjectmathematical modelsen
dcterms.subjectsimulation modelsen
dcterms.subjectalgorithmsen
dcterms.subjectsensitivity analysisen
dcterms.subjecthydraulic conductivityen
dcterms.subjectcalibrationen
dcterms.subjectsalt water intrusionen
dcterms.typeJournal Article

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