《Table 4 Description of the simulated scenarios》

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《"Hydrological and economic feasibility of mitigating a stressed coastal aquifer using managed aquifer recharge: a case study of Jamma aquifer, Oman"》

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Note:A，the base scenario；NA，not applicable；MAR，managed aquifer recharge；Upstream，the injection was performed 16.5 km upstream of the coastline（approximately 12.5 km from the water supply line）；Downstream，in the vicinity of the farming area and appro

Eight scenarios（which are divided into 3 main groups:A，B and C）were simulated and are presented in Table 4.The simulation time is set as 20 a，with 244 stress periods of 30 d each.Scenario A considers the case\""business as usual\""，which simulates the current situation assuming that no changes（in terms of management and climatic conditions）will take place for the next 20 a.Scenario A will thus be considered as the base scenario，with which the results of the other scenarios are compared.The responses of the aquifer to MAR using TWW in two injection locations were simulated（scenarios A1 and A2）.The locations of the injection wells were taken into consideration of land availability because the zone is densely populated and privately owned.The locations of wells are given as Zone 1 for upstream and Zone 2 for downstream（vicinity of farms）in Figure 3.The injected volume is based on the availability of excess TWW（31×106 m3/a），as reported by the Haya Water Company（Zekri et al.，2013）.Scenarios B and C are based on policies recommended by the Ministry of Agriculture and Fisheries of Oman（Oman Salinity Strategy，2012）and by the MRMWR in Oman（Abdel-Rahman and Abdel-Magid，1993），as shown in Table 4.