An approach to delineate groundwater recharge potential sites in Ambalantota, Sri Lanka using GIS techniques
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Date
2016
Journal Title
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Publisher
Elsevier
Abstract
The demand for fresh water in Hambantota District, Sri Lanka is rapidly increasing with the enormous
amount of ongoing development projects in the region. Nevertheless, the district experiences periodic
water stress conditions due to seasonal precipitation patterns and scarcity of surface water resources.
Therefore, management of available groundwater resources is critical, to fulfil potable water requirements
in the area. However, exploitation of groundwater should be carried out together with
artificial recharging in order to maintain the long term sustainability of water resources. In this study, a
GIS approach was used to delineate potential artificial recharge sites in Ambalantota area within Hambantota.
Influential thematic layers such as rainfall, lineament, slope, drainage, land use/land cover, lithology,
geomorphology and soil characteristics were integrated by using a weighted linear combination
method. Results of the study reveal high to moderate groundwater recharge potential in approximately
49% of Ambalantota area.
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Citation
Senanayake, I. P., Dissanayake, D. M. D. O. K., Mayadunna, B. B., & Weerasekera, W. L. (2016). An approach to delineate groundwater recharge potential sites in Ambalantota, Sri Lanka using GIS techniques. Geoscience Frontiers, 7(1), 115–124. https://doi.org/10.1016/j.gsf.2015.03.002