Understanding the hydrogeochemical processes and physical parameters controlling the groundwater chemistry of a tropical river basin, South India

Aju, C. D.; Rajesh, R.; Achu, A.L.; Rajaneesh, A.

doi:10.1007/s11356-021-17455-w

Cited by 17 publications

(3 citation statements)

References 30 publications

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“…Chadha (1999) [ 51 ] proposed a diagram illustrating the difference between alkaline earth (Ca 2+ + Mg 2+ ) and alkali metals (Na + + K + ) vs. the difference between weak acidic anions (CO 3 − + HCO 3 − ) and strong acidic anions (Cl − + SO 4 − ). The diagram has been applied in the literature to identify hydrochemical processes that control the GW chemistry in coastal aquifers, as an approach to identify SWI and GW salinization (e.g., [ 52 , 53 , 54 ]). Figure 11 shows the Chadha diagram of the tested GW samples from both aquifers.…”

Section: Resultsmentioning

confidence: 99%

Integrated Hydrogeological, Hydrochemical, and Isotopic Assessment of Seawater Intrusion into Coastal Aquifers in Al-Qatif Area, Eastern Saudi Arabia

et al. 2022

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Seawater intrusion (SWI) is the main threat to fresh groundwater (GW) resources in coastal regions worldwide. Early identification and delineation of such threats can help decision-makers plan for suitable management measures to protect water resources for coastal communities. This study assesses seawater intrusion (SWI) and GW salinization of the shallow and deep coastal aquifers in the Al-Qatif area, in the eastern region of Saudi Arabia. Field hydrogeological and hydrochemical investigations coupled with laboratory-based hydrochemical and isotopic analyses (18O and 2H) were used in this integrated study. Hydrochemical facies diagrams, ionic ratio diagrams, and spatial distribution maps of GW physical and chemical parameters (EC, TDS, Cl−, Br−), and seawater fraction (fsw) were generated to depict the lateral extent of SWI. Hydrochemical facies diagrams were mainly used for GW salinization source identification. The results show that the shallow GW is of brackish and saline types with EC, TDS, Cl−, Br− concentration, and an increasing fsw trend seaward, indicating more influence of SWI on shallow GW wells located close to the shoreline. On the contrary, deep GW shows low fsw and EC, TDS, Cl−, and Br−, indicating less influence of SWI on GW chemistry. Moreover, the shallow GW is enriched in 18O and 2H isotopes compared with the deep GW, which reveals mixing with recent water. In conclusion, the reduction in GW abstraction in the central part of the study area raised the average GW level by three meters. Therefore, to protect the deep GW from SWI and salinity pollution, it is recommended to implement such management practices in the entire region. In addition, continuous monitoring of deep GW is recommended to provide decision-makers with sufficient data to plan for the protection of coastal freshwater resources.

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Section: Resultsmentioning

confidence: 99%

Integrated Hydrogeological, Hydrochemical, and Isotopic Assessment of Seawater Intrusion into Coastal Aquifers in Al-Qatif Area, Eastern Saudi Arabia

et al. 2022

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“…As discussed by Abhisheka and Binoj Kumar (2018), the drinking suitability of groundwaters of KRB was assessed during 2010-2011 period and reported that except pH, all other parameters were within the limits prescribed by BIS and hence only a few percentage of samples were suitable for drinking. Another study has been carried out by Aju et al (2021) which correlates the major geogenic processes contributing to the ion concentration in groundwater and the depth of wells during the year 2016. Based on both these studies in the KRB, the ionic concentration in groundwater was found to be normal and within the limits of BIS and WHO.…”

Section: Introductionmentioning

confidence: 99%

“…Another study has been carried out by Aju et al. (2021) which correlates the major geogenic processes contributing to the ion concentration in groundwater and the depth of wells during the year 2016. Based on both these studies in the KRB, the ionic concentration in groundwater was found to be normal and within the limits of BIS and WHO.…”

Section: Introductionmentioning

confidence: 99%

Geospatial distribution of groundwater quality using entropy water quality index and statistical assessment: A study from a tropical climate river basin

Mohan

Krishnakumar

2021

Environmental Quality Mgmt

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A combination of multivariate statistical techniques and an integrated water quality index methodology was adopted to understand the genesis of major ionic composition of groundwater in a tropical river basin of South India. The present study aims to examine the hydrochemical characterisation and drinking suitability of groundwater reserves of Kallada River Basin (KRB), India by collecting samples from 31 wells during pre‐monsoon (May 2019), monsoon (September 2019), and post‐monsoon (February 2020) seasons. The findings were compared with the maximum acceptable limites prescribed by Bureau of Indian Standards (BIS 2012) and World Health Organization (WHO 2017). The study also highlights the comparison of the present work with the regional and global average cation and anion concentrations. The Principal Component Analysis (PCA) extracted three factors and the obtained results shows that Cl−, TDS, Na+, and Ca2+ ions contribute towards the moderate pollution load in groundwater. The increased population around the river basin indicates the unhygienic practices in the area and hence eco‐friendly authority steps/actions should be taken to enhance the groundwater quality of the basin. The findings of this study outlines the desire for groundwater research with a further marked focus on upgrading the quantity and quality of groundwater reserves on a global scale.

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Hydrogeochemical processes controlling surface water quality for irrigation in a Mediterranean wetland ecosystem, Northeast Algeria

Zahi,

Drouiche,

Medjani

et al. 2024

Environ Monit Assess

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Understanding the hydrogeochemical processes and physical parameters controlling the groundwater chemistry of a tropical river basin, South India

Cited by 17 publications

References 30 publications

Integrated Hydrogeological, Hydrochemical, and Isotopic Assessment of Seawater Intrusion into Coastal Aquifers in Al-Qatif Area, Eastern Saudi Arabia

Integrated Hydrogeological, Hydrochemical, and Isotopic Assessment of Seawater Intrusion into Coastal Aquifers in Al-Qatif Area, Eastern Saudi Arabia

Geospatial distribution of groundwater quality using entropy water quality index and statistical assessment: A study from a tropical climate river basin

Hydrogeochemical processes controlling surface water quality for irrigation in a Mediterranean wetland ecosystem, Northeast Algeria

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