• NERC Data Catalogue Service
  •  
  •  
  •  

Groundwater levels, salinity, pH, and rainfall on the Indian Ocean island of Karainagar, Sri Lanka, 2019–2024

[This dataset is embargoed until August 31, 2026]. This dataset includes measurements of groundwater levels, salinity, and pH collected from 36 dug wells, along with rainfall data, on the Indian Ocean island of Karainagar, Sri Lanka, spanning the period from 2019 to 2024. 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. Thirty-six dug wells—used for agricultural, domestic, Kovil (Temple), and public purposes—were inventoried. These wells were monitored to track groundwater levels and key physicochemical parameters, specifically salinity (measured as electrical conductivity, EC) and pH, on Karainagar Island. Full details about this dataset can be found at https://doi.org/10.5285/ba22d53b-4eee-48a1-b6f3-653d252c0358

Simple

Date (Publication)
2025-05-28
Identifier
https://catalogue.ceh.ac.uk/id/ba22d53b-4eee-48a1-b6f3-653d252c0358
Identifier
doi: / 10.5285/ba22d53b-4eee-48a1-b6f3-653d252c0358
Other citation details
Karthiga, I., Rameshwaran, P., Ketheesan, B., Sriskandarajah, N. (2025). Groundwater levels, salinity, pH, and rainfall on the Indian Ocean island of Karainagar, Sri Lanka, 2019–2024. NERC EDS Environmental Information Data Centre 10.5285/ba22d53b-4eee-48a1-b6f3-653d252c0358
Point of contact
  UK Centre for Ecology & Hydrology - Ponnambalam Rameshwaran
Author
  University of Jaffna - Karthiga, I.
https://orcid.org/0000-0002-0123-6934
Author
  UK Centre for Ecology & Hydrology - Rameshwaran, P.
https://orcid.org/0000-0002-8972-953X
Author
  University of Jaffna - Ketheesan, B.
https://orcid.org/0000-0002-9801-7091
Author
  Swedish University of Agricultural Sciences - Sriskandarajah, N.
https://orcid.org/0000-0002-9429-6767
Owner
  University of Jaffna
Owner
  UK Centre for Ecology & Hydrology
Custodian
  NERC EDS Environmental Information Data Centre
Publisher
  NERC EDS Environmental Information Data Centre
GEMET - INSPIRE themes, version 1.0
  • Environmental Monitoring Facilities
Access constraints
otherRestrictions Other restrictions
Other constraints
Embargoed
Use constraints
otherRestrictions Other restrictions
Other constraints
This resource is available under the terms of the Open Government Licence
Use constraints
otherRestrictions Other restrictions
Other constraints
If you reuse this data, you should cite: Karthiga, I., Rameshwaran, P., Ketheesan, B., Sriskandarajah, N. (2025). Groundwater levels, salinity, pH, and rainfall on the Indian Ocean island of Karainagar, Sri Lanka, 2019–2024. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/ba22d53b-4eee-48a1-b6f3-653d252c0358
Spatial representation type
textTable Text, table
Metadata language
EnglishEnglish
Character set
utf8 UTF8
Topic category
  • Environment
  • Inland waters
  • Utilities communication
Begin date
2019-01-01
End date
2024-12-31
N
S
E
W
thumbnail


Unique resource identifier
WGS 84
Distribution format
  • Comma-separated values (CSV) ()

Distributor
  NERC EDS Environmental Information Data Centre
Hierarchy level
dataset Dataset
Other
dataset

Conformance result

Date (Publication)
2010-12-08
Statement
Groundwater levels and well dimensions (kerb height, diameter/width, and bottom elevation) were measured using a measuring tape. The locations of the dug wells and ground elevations relative to Mean Sea Level (MSL) were determined using a Global Positioning System (GPS) and land surveys. Salinity (measured as electrical conductivity, EC) and pH were recorded using a Hach HQ40D multi-parameter meter. Daily rainfall time series data were obtained from the records of the Agrarian Services Centre (ASC) in Karainagar.
File identifier
ba22d53b-4eee-48a1-b6f3-653d252c0358 XML
Metadata language
EnglishEnglish
Character set
ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1
Hierarchy level
dataset Dataset
Hierarchy level name
dataset
Date stamp
2025-11-13T16:12:51
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  NERC EDS Environmental Information Data Centre
Lancaster Environment Centre, Library Avenue, Bailrigg , Lancaster , LA1 4AP , UK
https://eidc.ac.uk/
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Environmental Monitoring Facilities

Provided by

logo

Share on social sites

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •