Visualizing the spatial water quality of Bentota, Sri Lanka in the presence of seawater intrusion

T K G P Ranasinghe; R U K Piyadasa

doi:DOI: 10.19637/j.cnki.2305-7068.2019.04.005

Volume 7 Issue 4

Dec. 2019

Turn off MathJax

Article Contents

Article Navigation > Journal of Groundwater Science and Engineering > 2019 > 7(4): 340-353

T K G P Ranasinghe, R U K Piyadasa. 2019: Visualizing the spatial water quality of Bentota, Sri Lanka in the presence of seawater intrusion. Journal of Groundwater Science and Engineering, 7(4): 340-353. doi: DOI: 10.19637/j.cnki.2305-7068.2019.04.005

Citation:

PDF( 3769 KB)

Visualizing the spatial water quality of Bentota, Sri Lanka in the presence of seawater intrusion

doi: DOI: 10.19637/j.cnki.2305-7068.2019.04.005

1Department of Town and Country Planning, University of Moratuwa, Katubadda, Moratuwa 10400, Sri Lanka. 2Department of Geography, University of Colombo, Kumaratunga Munidasa Mawatha, Colombo 00700, Sri Lanka.

Publish Date: 2019-12-28

Abstract

Abstract

Seawater flows towards the inlands along with the rivers and canals, through the process of infiltration and leaks in the ground water characterized by high concentrations of soluble salts. High salinity concentrations can make groundwater unsuitable for public consumption and surface water unsuitable for irrigation and agricultural activities. This study envisages the fluctuations of ground and surface water quality of Bentota area in the presence of seawater intrusion. The temporal and spatial variations of eleven water parameters were monitored by collecting the water samples during one year period. Spatial distributions were assessed by applying the Inverse distance weighted (IDW) interpolation method in Arc GIS 10.5 software. Water quality is assessed on the integration of all parameters in terms of an index based on the World Health Organization (WHO) standards. The significant linear relationship between the considered parameters of surface water (SW) and groundwater (GW) were identified applying correlation analysis using SPSS software. All parameters of surface water were above the permissible limits of WHO standards. Surface water quality index values with respect to 60% of canals show very poor quality (>1 250) of surface water indicating their unsuitability for irrigation activities. Those surface water bodies indicated very highly saline conditions during dry months. The spatial distribution of ground water quality index with respect to the highest parameter values of each sampling location indicates that 52.2% of total land extent of Bentota Divisional Secretariat Division (DSD) has good quality of ground water which is suitable for drinking. Its 47.2% of total land extent has poor quality of ground water for drinking purpose and less than 0.5% of the area consists of excellent or very poor quality of ground water in each. This study helps to manage coastal aquifers by understanding the extreme water quality conditions and coastal salinity.
- Salt water intrusion,
- Coastal salinity,
- Water quality,
- Spatial distribution

FullText(HTML)

References(15)

References

Gregory De Costa, Jessic Wilson, Mark porter, et al. 2008. Assessment and management of change in coastal zones caused by salinity intrusion-Asia Pacific network for global change research. Open Polytechnic of New Zealand.

Tomczak M. 1998. Spatial interpolation and its uncertainty using automated anisotropic inverse distance weighting (IDW). Cross-validation/ jackknife approach. Journal of Geographic Information and Decision Analysis, 2(2): 18-30.

Barlow P M, Wild E C. 2003. Bibliography on the occurrence and intrusion of saltwater in aquifers along the Atlantic coast of the United States, U S Geological Survey Open File Report, 02-235: 30.

Guevara H P, Ruiz C G, Barrientos J h, et al. 2012. Relationship between chloride concentration and electrical conductivity in groundwater and its estimation from vertical electrical soundings (VESs) in Guasave Sinaloa, Mexico. Ciencia e Investigation Agraria, 39(1): 229-239.

Rahman A A, Ravenscroft P. 2003. Groundwater resources and development in Bangladesh background to the Arsenic crisis, agriculture potential and the environment. Bangladesh Centre for Advanced Studies: University Press Ltd.

Werner A D, Bakker M A J, Post V E A, et al. 2013. Seawater intrusion processes, investigation and management: Recent advances and future challenges. Advances in Water Resources, 51: 3-26.

Hadithi M. 2012. Application of water quality index to assess suitability of groundwater quality for drinking purposes in Ratmao Pa-thri Rao watershed, Haridwar District, India: American Journal of Scientific and Industrial Research: Science Hub.

Saxena M M. 1998. Environmental analysis: Water, soil, air. Bikaner, India: Agro Botanical Pub: 186.

Jayasekera D, Kaluarachchi J J, Villholth K G. 2008. Groundwater quality impacts due to population growth and land use exploitation in the coastal aquifers of Sri Lanka. Southern Illinois University Carbondale, Open SIUC, Conference Proceedings: 43.

World Health Organization (WHO). 2011. Guidelines for drinking-water quality, fourth edition. Switzerland.

Ferguson G, Gleeson T. 2012. Vulnerability of coastal aquifers to groundwater use and climate change. Nature Climate Change, 2(5): 342-345.

Custodio E, Bruggeman G A. 1987. Groundwater problems in coastal areas, studies and reports in hydrology. No. 45, UNESCO, Paris: 576.

Ravikumar P, Mehmood M A, Somashekar R K. 2013. Water quality index to determine the surface water quality of Sankey tank and Ma-llathahalli Lake, Bangalore urban district, Karnataka, India. Applied Water Science, 3: 247-261.

Perlman H. 2014. Sediment and suspended sediment. The USGS Water Science School.

Cook S, Dixon-jain P, Hocking M, et al. 2013. A national-scale vulnerability assessment of seawater intrusion: Vulnerability factor analysis. Geoscience Australia and National Centre for Groundwater Research and Training, Adelaide.

Relative Articles

[1]	Aida H Baghanam, Vahid Nourani, Zohre Khodaverdi, Amirreza T Vakili, 2024: Assessment of water quality suitability for agriculture in a potentially leachate-contaminated region, Journal of Groundwater Science and Engineering, 12, 281-292. doi: 10.26599/JGSE.2024.9280021
[2]	Qiu-yao Dong, Jiao Xiang, Chao Song, Pan Wang, Hao-tian Wen, Ming-jiang Yan, 2022: Spatial distribution characteristics and main controlling factors of germanium in soil of northern Dabie Mountains, China, Journal of Groundwater Science and Engineering, 10, 381-392. doi: 10.19637/j.cnki.2305-7068.2022.04.006
[3]	Khan Tanzeel, Akhtar Malik Muhammad, Malghani Gohram, Akhtar Rabia, 2022: Comparative analysis of bacterial contamination in tap and groundwater: A case study on water quality of Quetta City, an arid zone in Pakistan, Journal of Groundwater Science and Engineering, 10, 153-165. doi: 10.19637/j.cnki.2305-7068.2022.02.005
[4]	Li-sha MA, Zhan-tao HAN, Yan-yan WANG, 2021: Dispersion performance of nanoparticles in water, Journal of Groundwater Science and Engineering, 9, 37-44. doi: 10.19637/j.cnki.2305-7068.2021.01.004
[5]	Mehdi Bahrami, Elmira Khaksar, Elahe Khaksar, 2020: Spatial variation assessment of groundwater quality using multivariate statistical analysis(Case Study: Fasa Plain, Iran), Journal of Groundwater Science and Engineering, 8, 230-243. doi: 10.19637/j.cnki.2305-7068.2020.03.004
[6]	Hong-wei SONG, Fan XIA, Hai-dong MU, Wei-qiang WANG, Ming-sen SHANG, 2020: Study on detecting spatial distribution availability in mine goafs by ultra-high density electrical method, Journal of Groundwater Science and Engineering, 8, 281-286. doi: 10.19637/j.cnki.2305-7068.2020.03.008
[7]	Negar Fathi, Mohammad Bagher Rahnama, Mohammad Zounemat Kermani, 2020: Spatial analysis of groundwater quality for drinking purpose in Sirjan Plain, Iran by fuzzy logic in GIS, Journal of Groundwater Science and Engineering, 8, 67-78. doi: 10.19637/j.cnki.2305-7068.2020.01.007
[8]	Prusty Rabiranjan, Biswal Trinath, 2020: Physico-chemical, bacteriological and health hazard effect analysis of the water in Taladanda Canal, Paradip area, Odisha, India, Journal of Groundwater Science and Engineering, 8, 338-348. doi: 10.19637/j.cnki.2305-7068.2020.04.004
[9]	Mohammad Tofayal Ahmed, Minhaj Uddin Monir, Md Yeasir Hasan, Md Mominur Rahman, Md Shamiul Islam Rifat, Md Naim Islam, Abu Shamim Khan, Md Mizanur Rahman, Md Shajidul Islam, 2020: Hydro-geochemical evaluation of groundwater with studies on water quality index and suitability for drinking in Sagardari, Jashore, Journal of Groundwater Science and Engineering, 8, 259-273. doi: 10.19637/j.cnki.2305-7068.2020.03.006
[10]	HU Zun-fang, KANG Feng-xin, ZOU An-de, YU Lin-song, LI Yang, TIAN Tong-liang, KANG Gui-ling, 2019: Evolution trend of the water quality in Dongping Lake after South-North Water Transfer Project in China, Journal of Groundwater Science and Engineering, 7, 333-339. doi: DOI: 10.19637/j.cnki.2305-7068.2019.04.004
[11]	MA Bai-heng, LIU Shuo, WANG Xin-zhou, ZHAI Xing, LI Hong-chao, LI Chen-xi, 2018: A preliminary study on the spatial distribution characteristics and causes of strontium-rich mineral water in the Dushan complex, Journal of Groundwater Science and Engineering, 6, 115-125. doi: 10.19637/j.cnki.2305-7068.2018.02.005
[12]	Alhassan H Ismai, Muntasir A Shareef, Wesam Mahmood, 2018: Hydrochemical characterization of groundwater in Balad district, Salah Al-Din Governorate, Iraq, Journal of Groundwater Science and Engineering, 6, 306-322. doi: 10.19637/j.cnki.2305-7068.2018.04.006
[13]	JIANG Ti-sheng, QU Ci-xiao, WANG Ming-yu, SUN Yan-wei, HU Bo, CHU Jun-yao, 2017: Analysis on temporal and spatial variations of groundwater hydrochemical characteristics in the past decade in southern plain of Beijing, China, Journal of Groundwater Science and Engineering, 5, 235-248.
[14]	WANG Ji-ning, MENG Yong-hui, 2016: Characteristics analysis and model prediction of sea-salt water intrusion in lower reaches of the Weihe River, Shandong Province, China, Journal of Groundwater Science and Engineering, 4, 149-156.
[15]	ZHOU Li-ling, CHENG Zhe, DUAN Lei, WANG Wen-ke, 2015: Distribution of groundwater salinity and formation mechanism of fresh groundwater in an arid desert transition zone, Journal of Groundwater Science and Engineering, 3, 268-279.
[16]	JIA Rui-liang, ZHOU Jin-long, LI Qiao, LI Yang, 2015: Analysis of evaporation of high-salinity phreatic water at a burial depth of 0 m in an arid area, Journal of Groundwater Science and Engineering, 3, 1-8.
[17]	Yun GAO, 2014: Coastal Case Study-Clarence City Council, Journal of Groundwater Science and Engineering, 2, 21-28.
[18]	GE Li-qiang, CHENG Yan-pei, YUE Chen, 2014: Study of water resources for crop utilization in China from the perspective of Virtual Water, Journal of Groundwater Science and Engineering, 2, 67-75.
[19]	WANG Chun-xiao, ZHANG Zhao-ji, FEI Yu-hong, QIAN Yong, 2014: Research on Migration Features of Salt-Fresh Water Interface on the North China Plain, Journal of Groundwater Science and Engineering, 2, 68-79.
[20]	B.T. Hiller, N. Jadamba, 2013: Groundwater Use in the Selenge River Basin, Mongolia, Journal of Groundwater Science and Engineering, 1, 11-32.