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It provides information, including reservoir location, type (impounding or non-impounding), use (water resources, hydro-electric, ecological, flood storage, canal), capacity, planning date, construction date, catchment National River Flow Archive (NRFA) gauge references and membership of a reservoir group, based on current usage within the CEH Monthly Hydrological Summary (https://nrfa.ceh.ac.uk/monthly-hydrological-summary-uk). The dataset comprises 273 individual reservoirs, which amount to approximately 90% of total UK reservoir storage. Data quality has been recorded, using a data flag system and a notes section, with references relevant to each reservoir provided. ","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","awardTitle":"Analysis of historic drought and water scarcity in the UK: a systems-based study of drivers, impacts and their interactions","awardNumber":"NE/L010127/1","awardURI":"https://gtr.ukri.org/projects?ref=NE/L010127/1","orcid":false,"ror":true}],"id":"f5a7d56c-cea0-4f00-b159-c3788a3b2b38","incomingCitationCount":4,"incomingCitations":[{"description":"Coxon, G., Addor, N., Bloomfield, J.P., Freer, J., Fry, M., Hannaford, J., Howden, N.J.K., Lane, R., Lewis, M., Robinson, E.L., Wagener, T., & Woods, R. (2020). CAMELS-GB: hydrometeorological time series and landscape attributes for 671 catchments in Great Britain. Earth System Science Data, 12(4), 2459–2483.","url":"https://doi.org/10.5194/essd-12-2459-2020","type":"academic"},{"description":"Bloomfield, J.P., Gong, M., Marchant, B.P., Coxon, G., & Addor, N. (2021). How is Baseflow Index (BFI) impacted by water resource management practices? Hydrology and Earth System Sciences, 25(10), 5355-5379","url":"https://doi.org/10.5194/hess-25-5355-2021","type":"academic"},{"description":"Salwey, S., Coxon, G., Pianosi, F., Singer, M.B. & Hutton, C. (2023) National‐Scale Detection of Reservoir Impacts Through Hydrological Signatures. Water Resources Research 59.\n","url":"https://doi.org/10.1029/2022wr033893","type":"academic"},{"description":"Department for Environment, Food & Rural Affairs (Defra) (2026).\nThe Land Use Framework for England (CP 1545). HM Government.","url":"https://www.gov.uk/government/publications/land-use-framework","type":"policy"}],"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/f5a7d56c-cea0-4f00-b159-c3788a3b2b38.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"inspireThemes":[{"theme":"Hydrography","uri":"http://inspire.ec.europa.eu/theme/hy"}],"keywordsOther":[{"value":"Historic Droughts"},{"value":"Drought Catalogue"},{"value":"Drought Inventory"},{"value":"Droughts"},{"value":"Reservoir "}],"keywordsTheme":[{"value":"Hydrology","uri":"http://onto.nerc.ac.uk/CEHMD/topic/9"}],"licences":[{"value":"This resource is made available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}],"lineage":"Information on reservoirs and their capacity was collected from the Environment Agency under Open Government Licence through a Freedom of Information request, and the UK Lakes Portal (CEH). Information was then gathered from internet searches. The quality of source data has been identified wherever possible through the use of a data flag system, and use of the notes section. References are supplied for all information within the inventory.\nThe composition of reservoir groups were confirmed through correspondence with Water Companies responsible for submitting storage volumes for the Hydrological Summaries, produced by CEH. The inventory includes reservoirs up to 1,600 megalitre (Ml) capacity, as well as reservoirs below this capacity that are included within reservoir groups for which there is historic storage information and sufficient information on planning and construction dates. The threshold of 1,600 Ml was decided, based on less available information for smaller reservoirs, and that 1,600 Ml equates to approximately 90% capacity of all reservoirs in the Reservoirs Act 1975.","metadataDate":"2026-06-27T19:24:11","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/f5a7d56c-cea0-4f00-b159-c3788a3b2b38","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/f5a7d56c-cea0-4f00-b159-c3788a3b2b38.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"familyName":"Durant","givenName":"Mason","organisationName":"HR Wallingford Ltd","organisationIdentifier":"https://ror.org/00nxna028","role":"pointOfContact","email":"m.durant@hrwallingford.com","address":{"deliveryPoint":"Kestrel House, Crowmarsh Gifford","city":"Wallingford","administrativeArea":"Oxfordshire","postalCode":"OX10 8BA","country":"United Kingdom"},"fullName":"Durant, M.","pointOfContact":"HR Wallingford Ltd"}],"publicationDate":"2018-07-20T00:00:00.000Z","publishers":[{"organisationName":"NERC Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"relationships":[{"relation":"http://purl.org/dc/terms/isPartOf","target":"af1db516-3411-416f-9c51-5ab99d912f8a"}],"resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/f5a7d56c-cea0-4f00-b159-c3788a3b2b38"},{"code":"10.5285/f5a7d56c-cea0-4f00-b159-c3788a3b2b38","codeSpace":"doi"}],"resourceMaintenance":[{"frequencyOfUpdate":"notPlanned"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"familyName":"Durant","givenName":"Mason","organisationName":"HR Wallingford Ltd","organisationIdentifier":"https://ror.org/00nxna028","role":"pointOfContact","email":"m.durant@hrwallingford.com","address":{"deliveryPoint":"Kestrel House, Crowmarsh Gifford","city":"Wallingford","administrativeArea":"Oxfordshire","postalCode":"OX10 8BA","country":"United Kingdom"},"fullName":"Durant, M.","pointOfContact":"HR Wallingford Ltd"},{"familyName":"Durant","givenName":"M.J.","organisationName":"HR Wallingford Ltd","organisationIdentifier":"https://ror.org/00nxna028","role":"author","email":"m.durant@hrwallingford.com","fullName":"Durant, M.J."},{"familyName":"Counsell","givenName":"C.J.","organisationName":"HR Wallingford Ltd","organisationIdentifier":"https://ror.org/00nxna028","role":"author","email":"c.counsell@hrwallingford.com","fullName":"Counsell, C.J."},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"},{"organisationName":"NERC Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"spatialReferenceSystems":[{"code":"http://www.opengis.net/def/crs/EPSG/0/27700","title":"OSGB 1936 / British National Grid"}],"spatialRepresentationTypes":["textTable"],"spatialResolutions":[{"distance":"1000","uom":"urn:ogc:def:uom:EPSG::9001"}],"supplemental":[{"url":"https://nrfa.ceh.ac.uk/monthly-hydrological-summary-uk","function":"website"}],"temporalExtents":[{"begin":"1789-01-01","end":"2001-12-31"}],"title":"Inventory of reservoirs amounting to 90% of total UK storage","topicCategories":[{"value":"inlandWaters","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/inlandWaters"}],"topics":["http://onto.nerc.ac.uk/CEHMD/topic/9"],"type":"dataset","uri":"https://catalogue.ceh.ac.uk/id/f5a7d56c-cea0-4f00-b159-c3788a3b2b38","useConstraints":[{"value":"This resource is made available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}]}