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The data was collected between March 2017 and February 2019. These measurements were taken to improve understanding of surface and subsurface water interconnections and movement through river and canal networks and underlying aquifers.\n\nThe data were collected as part of the NERC sponsored project Coupled Human and Natural Systems Environment (CHANSE), grant number NE/N01670X/1","distributionFormats":[{"name":"Comma-separated values (CSV)","type":"text/csv","version":"unknown"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"distributor","email":"info@eidc.ac.uk"}],"funding":[{"funderName":"Natural Environment Research Council","funderIdentifier":"https://ror.org/02b5d8509","awardNumber":"NE/N01670X/1","awardURI":"https://gtr.ukri.org/projects?ref=NE/N01670X/1","orcid":false,"ror":true}],"id":"09ae86d6-896f-430f-aab4-c5b46c265213","incomingCitationCount":1,"incomingCitations":[{"description":"Lapworth, D.J., Ó Dochartaigh, B., Nair, T., O'Keeffe, J., Krishan, G., MacDonald, A.M., Khan, M., Kelkar, N., Choudhary, S., Krishnaswamy, J., & Jackson, C.R.(2021). Characterising groundwater-surface water connectivity in the lower Gandak catchment, a barrage regulated biodiversity hotspot in the mid-Gangetic basin. Journal of Hydrology, 594, 125923.","url":"https://doi.org/10.1016/j.jhydrol.2020.125923"}],"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/09ae86d6-896f-430f-aab4-c5b46c265213.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"keywordsOther":[{"value":"isotope","uri":"http://www.eionet.europa.eu/gemet/concept/4523"},{"value":"groundwater","uri":"http://www.eionet.europa.eu/gemet/concept/3780"},{"value":"surface water","uri":"http://www.eionet.europa.eu/gemet/concept/8229"}],"keywordsPlace":[{"value":"Gandak river","uri":"http://sws.geonames.org/1271732"}],"keywordsProject":[{"value":"Coupled Human and Natural Systems Environment (CHANSE)"}],"keywordsTheme":[{"value":"Environmental survey","uri":"http://onto.nerc.ac.uk/CEHMD/topic/7"},{"value":"Hydrology","uri":"http://onto.nerc.ac.uk/CEHMD/topic/9"}],"licences":[{"value":"This resource is available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}],"lineage":"Stable isotope values for 108 water samples collected in the Gandak River Basin, in Bihar, India are presented, with accompanying values for SEC (specific electrical conductivity) for most of these samples. Samples were collected between February 2017 and February 2019, of surface water, groundwater and rainfall. Most groundwater samples were sampled from boreholes or wells that were in regular daily use. Samples were unfiltered and were bottled at source in Nalgene sample bottles, filled to brim to avoid air, and labelled at source. SEC was measured at source using a field SEC meter. Samples were analysed for the stable isotopes deuterium and oxygen-18 by mass spectrometry, at British Geological Survey laboratories in the UK. Further details can be found in the supporting information.\n\n Samples were taken by staff from the British Geological Survey, Imperial College London, Tilka Manjhi Bhagalpur University, Bihar and Ashoka Trust for Research in Ecology and the Environment (ATREE). \n\nThe data were collected as part of the NERC sponsored project Coupled Human and Natural Systems Environment (CHANSE), grant number NE/N01670X/1.","metadataDate":"2026-06-29T16:37:19","notGEMINI":true,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/09ae86d6-896f-430f-aab4-c5b46c265213","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/09ae86d6-896f-430f-aab4-c5b46c265213.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"honorificPrefix":"Dr","familyName":"O'Keeffe","givenName":"Jimmy","organisationName":"Imperial College London","organisationIdentifier":"https://ror.org/041kmwe10","role":"pointOfContact","email":"jimmy.okeeffe@imperial.ac.uk","fullName":"O'Keeffe, J.","pointOfContact":"Imperial College London"}],"publicationDate":"2020-05-20T00:00:00.000Z","publishers":[{"organisationName":"NERC Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/09ae86d6-896f-430f-aab4-c5b46c265213"},{"code":"10.5285/09ae86d6-896f-430f-aab4-c5b46c265213","codeSpace":"doi"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"familyName":"Ó Dochartaigh","givenName":"B.","organisationName":"British Geological Survey","organisationIdentifier":"https://ror.org/04a7gbp98","role":"author","email":"beod@bgs.ac.uk","fullName":"Ó Dochartaigh, B."},{"familyName":"O'Keeffe","givenName":"J.","organisationName":"Imperial College London","organisationIdentifier":"https://ror.org/041kmwe10","role":"author","email":"jimmy.okeeffe@imperial.ac.uk","fullName":"O'Keeffe, J."},{"familyName":"Nair","givenName":"T.","organisationName":"Ashoka Trust for Research in Ecology and the Environment","organisationIdentifier":"https://ror.org/02e22ra24","role":"author","email":"tarun.nair@atree.org","address":{"country":"India"},"fullName":"Nair, T."},{"familyName":"Jackson","givenName":"C.","organisationName":"British Geological Survey ","organisationIdentifier":"https://ror.org/04a7gbp98","role":"author","email":"crja@bgs.ac.uk","fullName":"Jackson, C."},{"familyName":"Krishnaswamy","givenName":"J.","organisationName":"Ashoka Trust for Research in Ecology and the Environment","organisationIdentifier":"https://ror.org/02e22ra24","role":"author","email":"jagdish@atree.org","address":{"country":"India"},"fullName":"Krishnaswamy, J."},{"familyName":"Chaudhary","givenName":"S.","organisationName":"T.M. 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