bce114d8-8f3b-49e0-90c6-f0788c1e9a0d English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:25:16 UK GEMINI 2.3 WGS 84 Groundwater levels (2019-2021) and rainfall data (2020-2021) collected with a citizen science approach on the Indian Ocean island of Karainagar, Sri Lanka 2025-06-27 publication https://catalogue.ceh.ac.uk/id/bce114d8-8f3b-49e0-90c6-f0788c1e9a0d 10.5285/bce114d8-8f3b-49e0-90c6-f0788c1e9a0d doi: Mahadeva, K.T., Suren, S., Mayuran, S., Kirishnaraja, S., Karthiga, I., Rameshwaran, P., Ketheesan, B., Sriskandarajah, N. (2025). Groundwater levels (2019-2021) and rainfall data (2020-2021) collected with a citizen science approach on the Indian Ocean island of Karainagar, Sri Lanka. NERC EDS Environmental Information Data Centre 10.5285/bce114d8-8f3b-49e0-90c6-f0788c1e9a0d This dataset includes measurements of groundwater levels (2019–2021) and rainfall data (2020–2021), collected through citizen participation on the Indian Ocean island of Karainagar, Sri Lanka. Karainagar, the study area, is one of seven islands located off the coast of Jaffna in northern Sri Lanka. This rectangular island is bounded on three sides by the Palk Strait, while the fourth side faces the Jaffna Lagoon and is connected to the mainland by a causeway. Karainagar covers an area of approximately 22 km², including inland water bodies. Seven dug wells used for domestic purposes were inventoried and monitored to track groundwater levels. Rainfall data were collected from six locations, including two schools, three households, and one village government office (Grama Niladhari Office). Full details about this dataset can be found at https://doi.org/10.5285/bce114d8-8f3b-49e0-90c6-f0788c1e9a0d Ponnambalam Rameshwaran UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk pointOfContact Mahadeva, K.T. Citizen Science Volunteer, Karainagar, Sri Lanka ktmahadeva@gmail.com author Suren, S. Citizen Science Volunteer, Karainagar, Sri Lanka subathirasuren@gmail.com author Mayuran, S. Citizen Science Volunteer, Karainagar, Sri Lanka m.mayuran1993@gmail.com author Kirishnaraja, S. Citizen Science Volunteer, Karainagar, Sri Lanka ikarthiga@univ.jfn.ac.lk author Karthiga, I. University of Jaffna karthigainthirakumaran@gmail.com https://orcid.org/0000-0002-0123-6934 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Rameshwaran, P. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0002-8972-953X ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Ketheesan, B. University of Jaffna kethees@eng.jfn.ac.lk https://orcid.org/0000-0002-9801-7091 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Sriskandarajah, N. Swedish University of Agricultural Sciences nadarajah.sriskandarajah@slu.se https://orcid.org/0000-0002-9429-6767 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk owner University of Jaffna EMAIL NOT PROVIDED owner NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher Hydrography theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Hydrology Climate and climate change Dug Well Groundwater Hydrology Karainagar Island Rainfall Sri Lanka Water Level Citizen Science otherRestrictions no limitations otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: Mahadeva, K.T., Suren, S., Mayuran, S., Kirishnaraja, S., Karthiga, I., Rameshwaran, P., Ketheesan, B., Sriskandarajah, N. (2025). Groundwater levels (2019-2021) and rainfall data (2020-2021) collected with a citizen science approach on the Indian Ocean island of Karainagar, Sri Lanka. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/bce114d8-8f3b-49e0-90c6-f0788c1e9a0d textTable English utf8 environment inlandWaters utilitiesCommunication 2019-01-01 2021-12-31 79.847 79.904 9.702 9.768 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/bce114d8-8f3b-49e0-90c6-f0788c1e9a0d Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/bce114d8-8f3b-49e0-90c6-f0788c1e9a0d.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 A citizen science initiative engaged local well owners, trained volunteers, and schoolchildren in monitoring groundwater and measuring rainfall. Participants were taught to measure water levels using a tape specifically modified for groundwater monitoring, and to record rainfall using a Holman rain gauge. The dimensions of dug wells—including kerb height, diameter or width, and bottom elevation—were measured using a measuring tape. The locations of rain gauges, dug wells, and ground elevations relative to Mean Sea Level (MSL) were determined using a Global Positioning System (GPS) and land surveys. Daily rainfall time series data were obtained from the records of the Agrarian Services Centre (ASC) in Karainagar.