Adaptation to climate variability in Sri Lanka: a case study of the Huruluwewa Irrigation System in the Dry Zone

Simple item page
cg.contributor.crpWater, Land and Ecosystemsen_US
cg.contributor.donorMinistry of Agriculture, Forestry and Fisheries, Japanen_US
cg.coverage.countryIndiaen_US
cg.coverage.countrySri Lankaen_US
cg.coverage.iso3166-alpha2INen_US
cg.coverage.iso3166-alpha2LKen_US
cg.coverage.regionSouthern Asiaen_US
cg.coverage.subregionNorth Central Provinceen_US
cg.coverage.subregionHuruluwewa Irrigation Systemen_US
cg.coverage.subregionSina Irrigation Systemen_US
cg.creator.identifierUpali Amarasinghe: 0000-0002-0088-0648en_US
cg.creator.identifierGiriraj Amarnath: 0000-0002-7390-9800en_US
cg.creator.identifierNiranga Alahacoon: 0000-0003-0984-5176en_US
cg.creator.identifierMohamed Aheeyar: 0000-0002-2117-0602en_US
cg.creator.identifierKiran M C: 0000-0002-5686-2334en_US
cg.creator.identifierSurajit Ghosh: 0000-0002-3928-2135en_US
cg.creator.identifierToru Nakada: 0000-0003-3757-0210en_US
cg.identifier.doihttps://doi.org/10.5337/2021.229en_US
cg.identifier.iwmilibraryH050737en_US
cg.isbn978-92-9090-931-6en_US
cg.issn2012-576en_US
cg.issn2478-1134en_US
cg.placeColombo, Sri Lankaen_US
dc.contributor.authorAmarasinghe, Upali A.en_US
dc.contributor.authorAmarnath, Girirajen_US
dc.contributor.authorAlahacoon, Nirangaen_US
dc.contributor.authorAheeyar, Mohamed M.M.en_US
dc.contributor.authorChandrasekharan, Kiran M.en_US
dc.contributor.authorGhosh, Surajiten_US
dc.contributor.authorNakada, Toruen_US
dc.date.accessioned2021-11-09T18:38:14Zen_US
dc.date.available2021-11-09T18:38:14Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/115928en_US
dc.titleAdaptation to climate variability in Sri Lanka: a case study of the Huruluwewa Irrigation System in the Dry Zoneen_US
dcterms.abstractThis paper assesses how the Huruluwewa tank (HWT) irrigation system in the North Central Province of Sri Lanka adapts to climate variability. The lessons learned in the HWT will be helpful for many water-scarce irrigation systems in the country, which bear high climate risks. Recurrent droughts are the bane of agriculture in the Dry Zone, comprising three-fourths of the land area spread over the Northern, North Central and Eastern provinces. In the HWT, the fifteenth largest canal irrigation system in the country, adaptation to climate variability happens on several fronts: changes made by the irrigation management to the water release regime; changes in the cropping patterns practiced by farmers in the command area; and the use of groundwater, which is recharged from rainfall, reservoir storage and canal irrigation, as supplemental irrigation. Such adaptation measures ensure that the available water supply in the reservoir is adequate for 100% cropping intensity over two cropping seasons, even in drought years, and enhances economic water productivity in terms of value per unit of consumptive water use. Moreover, irrigation management should consider groundwater recharge through canal irrigation as a resource, which brings substantial agricultural and economic benefits not only for the command area but also outside the command area. The adaptation patterns implemented in HWT demonstrate how water-scarce irrigation systems can achieve higher economic water productivity, i.e., generate ‘more income per drop’ to enhance climate resilience for people in and outside the canal command areas.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.available2021en_US
dcterms.bibliographicCitationAmarasinghe, Upali A.; Amarnath, Giriraj; Alahacoon, Niranga; Aheeyar, Mohamed; Chandrasekharan, Kiran; Ghosh, Surajit; Nakada, Toru. 2021. Adaptation to climate variability in Sri Lanka: a case study of the Huruluwewa Irrigation System in the Dry Zone. Colombo, Sri Lanka: International Water Management Institute (IWMI). 30p. (IWMI Working Paper 200) [doi: https://doi.org/10.5337/2021.229]en_US
dcterms.extent30p.en_US
dcterms.isPartOfIWMI Working Paper 200en_US
dcterms.issued2021-11-09en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherInternational Water Management Instituteen_US
dcterms.subjectclimate variabilityen_US
dcterms.subjectclimate change adaptationen_US
dcterms.subjectirrigation systemsen_US
dcterms.subjectarid zonesen_US
dcterms.subjecttank irrigationen_US
dcterms.subjectirrigation canalsen_US
dcterms.subjectirrigation managementen_US
dcterms.subjectland useen_US
dcterms.subjectcropping patternsen_US
dcterms.subjectwater supplyen_US
dcterms.subjectwater depletionen_US
dcterms.subjectcrop productionen_US
dcterms.subjectwater use efficiencyen_US
dcterms.subjectirrigation efficiencyen_US
dcterms.subjectwater productivityen_US
dcterms.subjectwater availabilityen_US
dcterms.subjectdroughten_US
dcterms.subjectrainfall patternsen_US
dcterms.subjectrisken_US
dcterms.subjectresilienceen_US
dcterms.subjectwater scarcityen_US
dcterms.subjectwater managementen_US
dcterms.subjectreservoirsen_US
dcterms.subjectwater spreadingen_US
dcterms.subjectcatchment areasen_US
dcterms.subjectwater storageen_US
dcterms.subjectgroundwater rechargeen_US
dcterms.subjectwater accountingen_US
dcterms.subjectwater policiesen_US
dcterms.subjectseasonal croppingen_US
dcterms.subjectdiversificationen_US
dcterms.subjectcrop water useen_US
dcterms.subjectconsumptive useen_US
dcterms.subjectfarmersen_US
dcterms.subjectfarm incomeen_US
dcterms.subjectremote sensingen_US
dcterms.subjectgeographical information systemsen_US
dcterms.subjectcase studiesen_US
dcterms.typeWorking Paperen_US

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
wor200 (1).pdf
Size:
7.75 MB
Format:
Adobe Portable Document Format
Description:
Download full publication
Download

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IWMI Working or Discussion Papers
IWMI Flagship Publications
WLE Working Paper