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dc.contributor.authorMollah, Mohammad Ashraful Haque
dc.date.accessioned2017-07-06T08:07:08Z
dc.date.available2017-07-06T08:07:08Z
dc.date.issued2017-07-06
dc.date.submitted2017-07-05T22:00:16Z
dc.identifier.urihttp://hdl.handle.net/1956/16144
dc.description.abstractGroundwater has been declining in Bangladesh since introduction of deep tube wells (DTWs) and shallow tube wells (STWs) in late 1970s. Seasonal variation of groundwater has been shifted upto 4 meters during last 34 years. During Boro seasons groundwater table dropped drastically than other seasons. This study hypothesized that groundwater extraction is much higher than the natural recharge plus percolated irrigated water. Farmer´s perception is that if they dig deeper the supply would not be a problem, which led uncontrolled use of shallow tube wells (STWs) to extract water from lowered zones. This study selected an area that is 20 km away from Dhaka city having intensive Boro production. Analyzing the interview data (to know about the practices by farmers at present and before) and Bangladesh Water Development Board groundwater table data, we tried to simulate the problematic scenario with the help of simulation software called iThink. To address the problem 3 different policies have been investigated to achieve sustainable solution of the problem. The chosen policies were - (1) Harnessing only groundwater; (2) Alternative cropping; and (3) Depending more to surface water. The simulation results show that alternative cropping and going for surface water could solve the problem as well as able to restore the groundwater to its previous condition. But moving to surface water is a passive solution independent to farmers´ decision. Understanding the problem of groundwater declination by farmers was not so apparent. Farmers never thought of possibility of restoring groundwater table. The study suggested that alternative crop cultivation by replacing Boro rice would be the best sustainable solution not only to halt groundwater declination but also to restore the groundwater table.eng
dc.language.isoengeng
dc.publisherThe University of Bergeneng
dc.subjectsurface watereng
dc.subjectirrigationeng
dc.subjecturbanisationeng
dc.subjectwater resource managementeng
dc.subjectriceeng
dc.subjectalternative croppingeng
dc.subjectsurface water pollutioneng
dc.subjectgroundwater declinationeng
dc.subjectsustainable solutioneng
dc.subjectquantitative methodseng
dc.subjectqualitative methodseng
dc.subjectFGDeng
dc.titleGroundwater Level Declination in Bangladesh: System dynamics approach to solve irrigation water demand during Boro seasoneng
dc.typeMaster thesiseng
dc.type.degreeMaster's Thesis in System Dynamicseng
dc.type.courseGEO-SD350eng
dc.subject.archivecodeMastergradeng
dc.subject.nus733199eng
dc.type.programMASV-SYSDYeng
dc.date.updated2017-07-05T22:00:16Z
dc.rights.holderCopyright the Author. All rights reservedeng
bora.peerreviewedNot peer reviewedeng
fs.gradepass
fs.unitcode15-41-00


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