Change Detection of Groundwater Level and Quality in Coastal Aquifers of Malabar Region in Kerala, India
P. S. Sheeja *
Indian Agricultural Research Institute, New Delhi-110012, India.
D. K. Singh
Indian Agricultural Research Institute, New Delhi-110012, India.
A. Sarangi
Indian Agricultural Research Institute, New Delhi-110012, India.
Vinay Sehgal
Indian Agricultural Research Institute, New Delhi-110012, India.
M. A. Iquebal
Indian Agricultural Statistics Institute, New Delhi-110012, India.
*Author to whom correspondence should be addressed.
Abstract
A study was conducted to assess the changes in groundwater level and quality for the period 2005-2020 in the coastal aquifer of the Vatakara-Koyilandy stretch in the Kozhikode district of Kerala. Hydrogeochemical analysis of groundwater quality parameters, irrigation water quality analysis and preparation of spatial variability of groundwater level and salinity were used for the study. The Piper diagram was used to track the change in the hydrochemical parameters of groundwater sources in 2005 and 2020 and identify changes in the chemical facies of the groundwater. The Gibbs diagram was used to identify the source of the dissolved ions present in the groundwater in both years. The United States Salinity Laboratory diagram was used to assess the groundwater's suitability for irrigation. The spatial variation of water table elevation and salinity were compared using the ordinary kriging method of interpolation. An increase in seawater intrusion into the wells and a reduction in irrigation water quality was indicated by the change in the Hydrochemical facies, and the shifting of more groundwater samples in the evaporation dominance zone in the Gibbs plot. The spatial variability of groundwater level indicates a reduction in premonsoon in both years. On the North coast, a 4% increase in the area under groundwater level < 2m. the reduction in the groundwater table on the coast increases the chance of sweater intrusion and thereby increased salinity. Even though the study area receives heavy rainfall during monsoon and recharging of the coastal aquifer, seawater intrusion progressed landward from 2005 to 2020 during the premonsoon and affected the groundwater level and quality over this period.
Keywords: Aquifer characterization, hydrochemical analysis, spatial prediction, groundwater, seawater intrusion
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Michalopoulos D, Dimitriou E. Assessment of pollution risk mapping methods in an eastern mediterranean catchment. Journal of Ecological Engineering. 2018;19:55–68.
Available:https://doi.org/10.12911/22998993/79646
Dash CJ, Sarangi A, Singh DK. Spatial variability of groundwater depth and quality parameters in the National Capital Territory of Delhi. Environmental Management. 2010;45:640–650.
Arslan H. Spatial and temporal mapping of groundwater salinity using ordinary kriging and indicator kriging: The case of Bafra Plain, Turkey. Agricultural Water Management. 2012;113:57–63.
Zhang B, Zhao D, Zhou P, Qu S, Liao F, Wang G. Hydrochemical characteristics of groundwater and dominantwater-rock interactions in the Delingha area, Qaidam Basin, Northwest China. Water (Switzerland). 2020;12(3).
Available:https://doi.org/10.3390/w12030836
Sathiamoorthy M, Ganesan M. Hydro geochemical characterization of surface and groundwater quality and assessing its suitability of drinking and irrigational purposes in Veeranam tank area, Cuddalore district, Tamil Nadu, India. 2018;23.
Lanjwani MF, Khuhawar MY, Jahangir Khuhawar TM, Samtio MS, Memon SQ. Spatial variability and hydrogeochemical characterisation of groundwaters in Larkana of Sindh, Pakistan. Groundwater for Sustainable Development. 2021;14.
Available:https://doi.org/10.1016/j.gsd.2021.100632
CGWB. Groundwater information booklet of Kozhikode district, Kerala state; 2013.
KSPCB. Report on Restoration of Polluted River Stretches Draft Action Plan Of River Kuttiyadi ( Priority V ); 2019.
Nair MM. Coastal geomorphology of Kerala. Journal of The Geological Society of India. 1987;29:450–458.
Nazimuddin M. Coastal Hydrogeology of Kozhikode, Kerala Under the Faculty of Marine Sciences; 1993.
Salaj SS, Ramesh D, Suresh Babu DS, Kaliraj S. Impacts of urbanization on groundwater vulnerability along the Kozhikode coastal stretch, Southwestern India using GIS based modified DRASTIC-U Model; 2018.
Available:www.jcsonline.co.nr
Piper AM. A graphic procedure in the geochemical interpretation of water-analyses. Transactions, American Geophysical Union. 1944;25(6):914.
Available:https://doi.org/10.1029/TR025i006p00914
Gibbs RJ. Mechanisms controlling world water chemistry. Science. 1970;170(3962):1088–1090.
Available:https://doi.org/10.1126/science.170.3962.1088
Isaaks EH, Srivastava RM. An introduction to applied geostatistics. Oxford University Press; 1989.
Ali SA, Ali U. Hydrochemical characteristics and spatial analysis of groundwater quality in parts of Bundelkhand Massif, India. Applied Water Science. 2018;8(1).
Alfarrah N, Walraevens K, Farrah N, Martens K. Hydrochemistry of the upper miocene-pliocene-quaternary aquifer complex of Jifarah Plain, NW-Libya. Geologica Belgica. 2011;14(3–4):159–174.
Shin K, Koh DC, Jung H, Lee J. The hydrogeochemical characteristics of groundwater subjected to seawater intrusion in the Archipelago, Korea. Water (Switzerland). 2020;12(6).
Available:https://doi.org/10.3390/W12061542
Rao NS, Vidyasagar, G, Surya Rao P, Bhanumurthy P. Chemistry and quality of groundwater in a coastal region of Andhra Pradesh, India. Applied Water Science. 2017;7(1):285–294.
Available:https://doi.org/10.1007/s13201-014-0244-0
Lanjwani MF, Khuhawar MY, Lanjwani AH, Khuahwar TMJ, Samtio MS, Rind IK, Soomro WA, Khokhar LA, Channa FA. Spatial variability and risk assessment of metals in groundwater of district Kamber-Shahdadkot, Sindh, Pakistan. Groundwater for Sustainable Development. 2022;100784.
Available:https://doi.org/10.1016/j.gsd.2022.100784
Sangadi P, Kuppan C, Ravinathan P. Effect of hydro-geochemical processes and saltwater intrusion on groundwater quality and irrigational suitability assessed by geo-statistical techniques in coastal region of Eastern Andhra Pradesh, India. Marine Pollution Bulletin. 2022;175.
Available:https://doi.org/10.1016/j.marpolbul.2022.113390
Richards LA. Diagnosis and Improvement of Saline and Alkali Soils, Agricultural Handbook. US Department of Agriculture. 1954;60.