A study on mountain front recharge by using integrated techniques in the hard rock aquifers of southern India

Panda, Banajarani; Chidambaram, S.; Ganesh, N.; Adithya, V.; Pradeep, K.; Vasudevan, U.; Ramanathan, Arvind; Ranjan, Shyam; Prasanna, Mohan Viswanathan; Paramaguru, K.

doi:10.1007/s10668-017-9987-8

Cited by 5 publications

(2 citation statements)

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“…Recharge processes in crystalline rock terrain have been investigated using stable isotopes and hydrochemical controls [95]. Lithology can affect GWR by influencing the hydrochemistry of the aquifer, with factors such as evaporation, mineral weathering/dissolution, and anthropogenic activities having an impact on the chemistry of groundwater along the groundwater course from recharging to discharging zones [96]. The lithological variation in a basin may not have a significant impact on hydrochemistry in hard rock aquifers, as recharge/discharge relations and flow scale control the hydrochemistry in regional groundwater basins [49].…”

Section: Discussionmentioning

confidence: 99%

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Mapping of Groundwater Recharge Zones in Hard Rock Aquifer through Analytic Hierarchy Process in Geospatial Platform

Subramani,

Kamaraj,

Saravana Kumar

et al. 2024

Water

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Extensive use of groundwater is a result of the growing population; in relation to this, studies have focused on groundwater conservation measures. This study identified groundwater artificial recharge zones (GWARZs) in the upper Manimuktha sub-basin through the application of remote sensing and GIS. A spatial analysis using the analytical hierarchical process (AHP) and weighted overlay analysis (WOA) was employed by integrating several spatial thematic layers such as geology, geomorphology, aquifer thickness, lineament density (LD), drainage density (DD), soil, slope, rainfall, and land use/land cover (LULC) in order to classify the GWARZs. The geomorphology along with lithology, higher aquifer thickness, low lineament densities, higher drainage densities, and gentle slope regions, were identified as suitable areas for artificial recharge zones. The study area was divided up into five classifications based on the integration analysis: excellent (41.1 km2), good (150.6 km2), moderate (123.9 km2), bad (125.5 km2), and very poor (57.7 km2). Excellent and good GWARZs were identified in the eastern and central regions of the study area. The final outcomes of this research were evaluated with seasonal electrical conductivity (EC) variations. The majority of samples with minor seasonal EC variations were observed in the excellent and good GWARZ categories. The results showed that the spatial analysis tool is useful for GWARZ delineation and sustainably managing groundwater resources.

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Section: Discussionmentioning

confidence: 99%

“…As it pertains to groundwater flow, fault zones can either act as a barrier to the flow or as a preferred pathway. Permeable channels for recharge are more likely to be activated during overbank flooding during intense precipitation events [58,96]. Structures like faults and fractures affect the flow of groundwater near the surface [99].…”

Section: Discussionmentioning

confidence: 99%