An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques

The scarcity of surface water resources in the dry season in the Kilinochchi district increases the demand for freshwater. Therefore, the main objective of this study is to delineate potential groundwater zones in Kilinochchi, Sri Lanka, using integrated remote sensing (RS), geographic information s...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Vyddiyaratnam Pathmanandakumar, Nadarajapillai Thasarathan, Manjula Ranagalage
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	remote sensing GIS AHP groundwater potential zone weighted overlay analysis Kilinochchi, Sri Lanka Geography (General) G1-922
Acceso en línea:	https://doaj.org/article/5f8de18a2005456ea2fd885c83e50d42
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5f8de18a2005456ea2fd885c83e50d42
record_format	dspace
spelling	oai:doaj.org-article:5f8de18a2005456ea2fd885c83e50d422021-11-25T17:52:47ZAn Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques10.3390/ijgi101107302220-9964https://doaj.org/article/5f8de18a2005456ea2fd885c83e50d422021-10-01T00:00:00Zhttps://www.mdpi.com/2220-9964/10/11/730https://doaj.org/toc/2220-9964The scarcity of surface water resources in the dry season in the Kilinochchi district increases the demand for freshwater. Therefore, the main objective of this study is to delineate potential groundwater zones in Kilinochchi, Sri Lanka, using integrated remote sensing (RS), geographic information systems (GIS) and the analytical hierarchy process (AHP). Groundwater potential zones are demarcated for the Kilinochchi district by overlaying thematic layers: geology, geomorphology, land use/land cover, soil types, drainage density, slope, lineament, and rainfall. The thematic layers were integrated into a geographic information system, and a weighted overlay analysis was carried out to delineate groundwater zones. Thus the resultant map is categorized into five different potential zones: very low (59.12 km<sup>2</sup>), low (207.78 km<sup>2</sup>), moderate (309.89 km<sup>2</sup>), high (507.74 km<sup>2</sup>), and very high (111.26 km<sup>2</sup>). The groundwater potential map was validated with the existing seventy-nine wells, which indicated a good prediction accuracy of 81.8%. This suggests that the results obtained by integrating RS-GIS and AHP are well-matched with the existing well water depth. The AHP approach based on RS-GIS was a handy and efficient technique for assessing potential groundwater zones. This research will help policymakers better manage the Kilinochchi district’s groundwater resources and give scope for further research into groundwater exploration in the area.Vyddiyaratnam PathmanandakumarNadarajapillai ThasarathanManjula RanagalageMDPI AGarticleremote sensingGISAHPgroundwater potential zoneweighted overlay analysisKilinochchi, Sri LankaGeography (General)G1-922ENISPRS International Journal of Geo-Information, Vol 10, Iss 730, p 730 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	remote sensing GIS AHP groundwater potential zone weighted overlay analysis Kilinochchi, Sri Lanka Geography (General) G1-922
spellingShingle	remote sensing GIS AHP groundwater potential zone weighted overlay analysis Kilinochchi, Sri Lanka Geography (General) G1-922 Vyddiyaratnam Pathmanandakumar Nadarajapillai Thasarathan Manjula Ranagalage An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques
description	The scarcity of surface water resources in the dry season in the Kilinochchi district increases the demand for freshwater. Therefore, the main objective of this study is to delineate potential groundwater zones in Kilinochchi, Sri Lanka, using integrated remote sensing (RS), geographic information systems (GIS) and the analytical hierarchy process (AHP). Groundwater potential zones are demarcated for the Kilinochchi district by overlaying thematic layers: geology, geomorphology, land use/land cover, soil types, drainage density, slope, lineament, and rainfall. The thematic layers were integrated into a geographic information system, and a weighted overlay analysis was carried out to delineate groundwater zones. Thus the resultant map is categorized into five different potential zones: very low (59.12 km<sup>2</sup>), low (207.78 km<sup>2</sup>), moderate (309.89 km<sup>2</sup>), high (507.74 km<sup>2</sup>), and very high (111.26 km<sup>2</sup>). The groundwater potential map was validated with the existing seventy-nine wells, which indicated a good prediction accuracy of 81.8%. This suggests that the results obtained by integrating RS-GIS and AHP are well-matched with the existing well water depth. The AHP approach based on RS-GIS was a handy and efficient technique for assessing potential groundwater zones. This research will help policymakers better manage the Kilinochchi district’s groundwater resources and give scope for further research into groundwater exploration in the area.
format	article
author	Vyddiyaratnam Pathmanandakumar Nadarajapillai Thasarathan Manjula Ranagalage
author_facet	Vyddiyaratnam Pathmanandakumar Nadarajapillai Thasarathan Manjula Ranagalage
author_sort	Vyddiyaratnam Pathmanandakumar
title	An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques
title_short	An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques
title_full	An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques
title_fullStr	An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques
title_full_unstemmed	An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques
title_sort	approach to delineate potential groundwater zones in kilinochchi district, sri lanka, using gis techniques
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5f8de18a2005456ea2fd885c83e50d42
work_keys_str_mv	AT vyddiyaratnampathmanandakumar anapproachtodelineatepotentialgroundwaterzonesinkilinochchidistrictsrilankausinggistechniques AT nadarajapillaithasarathan anapproachtodelineatepotentialgroundwaterzonesinkilinochchidistrictsrilankausinggistechniques AT manjularanagalage anapproachtodelineatepotentialgroundwaterzonesinkilinochchidistrictsrilankausinggistechniques AT vyddiyaratnampathmanandakumar approachtodelineatepotentialgroundwaterzonesinkilinochchidistrictsrilankausinggistechniques AT nadarajapillaithasarathan approachtodelineatepotentialgroundwaterzonesinkilinochchidistrictsrilankausinggistechniques AT manjularanagalage approachtodelineatepotentialgroundwaterzonesinkilinochchidistrictsrilankausinggistechniques
_version_	1718411864057053184

An Approach to Delineate Potential Groundwater Zones in Kilinochchi District, Sri Lanka, Using GIS Techniques

Ejemplares similares