Effects of rainwater-harvesting-induced artificial recharge on the groundwater of wells in Rajasthan, India

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doi: 10.1007/s10040-009-0491-6
Authors:Stiefel, John M.; Melesse, Assefa M.; McClain, Michael E.; Price, René M.; Anderson, Elizabeth P.; Chauhan, Narendra K.
Author Affiliations:Primary:
Florida International University, Department of Environmental Studies, Miami, FL, United States
Other:
World Vision, United States
Field Museum of Natural History, United States
Mohan Lal Sukhadia University, India
Volume Title:Hydrogeology Journal
Source:Hydrogeology Journal, 17(8), p.2061-2073. Publisher: Springer, Berlin - Heidelberg, Germany. ISSN: 1431-2174
Publication Date:2009
Note:In English with French and Spanish and Portuguese and Chinese summaries. 39 refs.; illus., incl. 1 table, sketch map
Summary:In light of the increasing deterioration of ground-water supplies in Rajasthan, India, rainwater harvesting practices in southern Rajasthan were studied to determine the effects of artificially recharged groundwater on the supply and quality of local groundwater. A physical and geochemical investigation utilizing environmental tracers (δ18O and Cl-), groundwater level and groundwater quality measurements, and geological surveys was conducted with two objectives: (1) to quantify the proportion of artificially recharged groundwater in wells located near rainwater harvesting structures and (2) to examine potential effects of artificial recharge on the quality of groundwater in these wells. A geochemical mixing model revealed that the proportion of artificial recharge in these wells ranged from 0 to 75%. Groundwater tracer, water table, and geological data provided evidence of complex groundwater flow and were used to explain the spatial distribution of artificial recharge. Furthermore, wells receiving artificial recharge had improved groundwater quality. Statistical analysis revealed a significant difference between the water quality in these wells and wells determined not to receive artificial recharge, for electrical conductivity and SO4-. The findings from this study provide quantitative evidence that rainwater harvesting structures in southern Rajasthan influence the groundwater supply and quality of nearby wells by artificially recharging local groundwater.
Subjects:Aquifers; Artificial recharge; Chloride ion; Chlorine; Climate change; Controls; D/H; Drainage basins; Ground water; Halogens; Hydrogen; Hydrology; Isotope ratios; Isotopes; Kriging; Monitoring; Monsoons; O-18/O-16; Oxygen; Preferential flow; Rainfall; Recharge; Stable isotopes; Statistical analysis; Streams; Substrates; Sulfate ion; Tracers; Water quality; Water wells; Asia; India; Indian Peninsula; Rajasthan India; Wakal River basin
Coordinates:N240000 N243000 E0733000 E0730000
Record ID:2011054346
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
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