Delineation of Groundwater Potential Zones in a Tropical River Basin Using Geospatial Techniques and Analytical Hierarchy Process

Achu, A.L.; Anjali, N.; Gopinath, Girish

doi:10.1007/978-3-031-14096-9_13

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…The ARB is characterized by tropical semi‐arid climate with true tropical diversity, fertile agriculture land, plantations. Ground water occurs in the ARB under a phreatic setting within the alluvium, laterites and weathered crystalline rocks in semi‐confined to confined form (Achu et al., 2023). The present study is restricted to the highland >75 m amsl and midland 8−75 m amsl physiographic divisions of the basin.…”

Section: Methodsmentioning

confidence: 99%

“…This study could be served as a baseline data for understanding the groundwater quality issues due to hard rock quarries and other future water quality management strategies and sustainable mineral extraction. Ground water occurs in the ARB under a phreatic setting within the alluvium, laterites and weathered crystalline rocks in semi-confined to confined form (Achu et al, 2023). The present study is restricted to the highland >75 m amsl and midland 8−75 m amsl physiographic divisions of the basin.…”

Section: Groundwater Is Widely Used For Irrigation Both Domestically ...mentioning

confidence: 99%

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Impact of stone quarries on groundwater quality at Achenkovil River Basin, Southern Western Ghats, India: Investigation using WQI and GIS

Reghunadh,

Antony,

Arun

et al. 2023

Environmental Quality Mgmt

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The quality concern of groundwater owing to human activities is mounting at a shocking rate in many of the river basins in Southern India. A study was carried out in this work to determine the quality of groundwater in the Achenkovil River Basin (ARB) in the Southern Western Ghats region of Kerala, India. A total of 25 dug well water samples were collected from the vicinity of aggregate quarries during the pre and post monsoon seasons of 2020–2021. The water quality index has been applied to categorize the water quality, namely, excellent, good, poor, etc. to infer the quality of water to the people and policy makers in the concerned area. The WQI results showed that 12% of the water samples in good and 28% depict in very poor category. The Hill‐Piper Trilinear diagram reveals that the groundwater of the study area falls under Ca2+/Mg2+, and HCO3− and SO42−, Cl−, Mg2+ types. The hydro‐chemistry of the rock‐dominant water type of the quarrying area is inhibited by geogenic‐processes along with the percolation of prevailing quarry leachate and infiltration into the nearby wells. The correlation matrix has been created and analyzed to observe their significant impetus on the assessment of groundwater quality. The overall quality of groundwater systems in the quarrying area, according to the various indices, is not fit for domestic consumption without mandatory quality treatment, but is suitable for irrigation.

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Section: Methodsmentioning

confidence: 99%

Section: Groundwater Is Widely Used For Irrigation Both Domestically ...mentioning

confidence: 99%

Impact of stone quarries on groundwater quality at Achenkovil River Basin, Southern Western Ghats, India: Investigation using WQI and GIS

Reghunadh,

Antony,

Arun

et al. 2023

Environmental Quality Mgmt

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Groundwater exploration in a granite aquifer using the telluric electric frequency selection method (TEFSM) in Eswatini, Southern Africa

Gomo,

Ngobe

2024

Sustain. Water Resour. Manag.

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Recent technology development has enabled the use of electric potential difference (EPD) in the telluric electric frequency selection method (TEFSM) geophysical approach for groundwater exploration. As a new approach, there is a need to build knowledge and experience in the application of the TEFSM geophysical approach in groundwater exploration in different hydrogeological settings. Hard rock granite aquifers are one of those aquifers where the TEFSM geophysical approach to exploring groundwater is yet to be investigated. In this study, a geophysical survey to identify four drilling sites for community boreholes was first conducted using the TEFSM approach. Vertical electrical profiles (VEP) of EPD up to 120 m per station were analyzed and interpreted to identify the depths of potential aquifers prior to drilling. The EPD VEP was then corroborated with borehole lithology data collected from the drilling to provide hydrogeophysical meaning to the data. The results show that groundwater occurs in the weathered granite layers. However, the water strikes appear to occur at the contact plane between the overlying weathered granite and the underlying fresh amphibolite. This suggests that the groundwater is stored in the weathered granite while the contact plane at fresh amphibolite is a preferential flow path. The granite aquifer at the study site is characterized by the EPD ranging from 0.018 to 0.068 mV. However, not all geological materials in this EPD range had water, some were just a reflection of weathering. The TEFSM geophysical approach was able to delineate layers of weathered granite aquifers and impermeable amphibolite based on low and high EPD contrasts, respectively. The findings assist in improving the practical understanding of the application of TEFSM to delineate aquifers and site boreholes in granite aquifers.

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Monitoring groundwater potential dynamics of north-eastern Bengal Basin in Bangladesh using AHP-Machine learning approaches

Dey,

Abir,

Ahmed

et al. 2023

Ecological Indicators

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Delineation of Groundwater Potential Zones in a Tropical River Basin Using Geospatial Techniques and Analytical Hierarchy Process

Cited by 5 publications

References 43 publications

Impact of stone quarries on groundwater quality at Achenkovil River Basin, Southern Western Ghats, India: Investigation using WQI and GIS

Impact of stone quarries on groundwater quality at Achenkovil River Basin, Southern Western Ghats, India: Investigation using WQI and GIS

Groundwater exploration in a granite aquifer using the telluric electric frequency selection method (TEFSM) in Eswatini, Southern Africa

Monitoring groundwater potential dynamics of north-eastern Bengal Basin in Bangladesh using AHP-Machine learning approaches

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