Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India

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cg.contributor.affiliationInternational Water Management Instituteen
cg.contributor.crpWater, Land and Ecosystems
cg.contributor.crpClimate Change, Agriculture and Food Security
cg.coverage.countryIndia
cg.coverage.iso3166-alpha2IN
cg.coverage.regionAsia
cg.coverage.regionSouthern Asia
cg.creator.identifierUpali Amarasinghe: 0000-0002-0088-0648
cg.creator.identifierLuna Bharati: 0000-0002-6218-3282
cg.creator.identifierRavinder Malik: 0000-0003-2516-6210
cg.identifier.doihttps://doi.org/10.1007/s10668-012-9385-1en
cg.identifier.wlethemeLand and Water Productivity
cg.identifier.wlethemeManaging Resource Variability and Competing Use
cg.issn1387-585Xen
cg.issn1573-2975en
cg.issue2en
cg.journalEnvironment, Development and Sustainabilityen
cg.river.basinGANGESen
cg.subject.wleRIVER BASINSen
cg.subject.wleHYDROLOGY/HYDROGEOLOGYen
cg.subject.wleIRRIGATIONen
cg.subject.wleWATER PRODUCTIVITYen
cg.subject.wleINSTITUTIONS/GOVERNANCE/POLICIES/REFORMSen
cg.volume15en
dc.contributor.authorAmarasinghe, Upali A.en
dc.contributor.authorSmakhtin, Vladimir U.en
dc.contributor.authorBharati, Lunaen
dc.contributor.authorMalik, Ravinder Paul Singhen
dc.date.accessioned2013-11-21T05:04:47Zen
dc.date.accessioned2014-02-02T16:39:50Zen
dc.date.available2013-11-21T05:04:47Zen
dc.date.available2014-02-02T16:39:50Zen
dc.identifier.urihttps://hdl.handle.net/10568/34590
dc.titleReallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in Indiaen
dcterms.abstractThis paper assesses the potential loss of irrigation benefits in reallocating water from irrigation to meet requirements for environmental flows (e-flows) in the Upper Ganga Basin (UGB) in northern India. The minimum requirement for e-flows in the UGB is 32 billion cubic meters (BCM), or 42 % of the mean annual runoff. The current runoff during the low-flow months falls below the minimum requirement for e-flows by 5.1 BCM. Depending on irrigation efficiency, reallocation of 41?51 % of the water from canal irrigation withdrawals can meet this deficit in minimum e-flows. The marginal productivity of canal irrigation consumptive water use (CWU), estimated from a panel regression with data from 32 districts from 1991 to 2004, assesses the potential loss of benefits in diverting water away from crop production. In the UGB, canal irrigation contributes to only 8 % of the total CWU of 56 BCM, and the marginal productivity of canal irrigation CWU across districts is also very low, with a median of 0.03 USD/m3. Therefore, at present, the loss of benefits is only 1.2?1.6 % of the gross value of crop production. This loss of benefits can be overcome with an increase in irrigation efficiency or marginal productivity.en
dcterms.accessRightsLimited Access
dcterms.available2012-08-29
dcterms.bibliographicCitationAmarasinghe, U.A., Smakhtin, V., Bharati, L. et al. Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India. Environ Dev Sustain 15, 385–405 (2013). https://doi.org/10.1007/s10668-012-9385-1en
dcterms.extentpp. 385-405en
dcterms.issued2013-04
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherSpringeren
dcterms.replaceshttps://hdl.handle.net/10568/40251en
dcterms.subjectwater resourcesen
dcterms.subjectresource allocationen
dcterms.subjectirrigationen
dcterms.subjectwater useen
dcterms.subjectwater allocationen
dcterms.subjectcanal irrigationen
dcterms.subjectirrigation efficiencyen
dcterms.subjectenvironmental flowsen
dcterms.subjectriver basinsen
dcterms.subjectsimulation modelsen
dcterms.typeJournal Article

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