NDLI: Assessment of effect of recharge from a check dam as a method of Managed Aquifer Recharge by hydrogeological investigations

Content Provider	Springer Nature Link
Author	Parimalarenganayaki, S. Elango, L.
Copyright Year	2014
Abstract	Check dams are often used as a method of Managed Aquifer Recharge (MAR) and are generally preferred in non-perennial rivers for intentional storage of the water. The objective of this study is to evaluate the efficacy of a check dam constructed as a MAR initiative across Arani River, North of Chennai, India by long-term hydrogeological investigations. Electrical resistivity survey and drilling of borehole helped to understand the subsurface geology. Water level and water quality measurements were carried out periodically from July 2010 to May 2012. Groundwater occurs in unconfined condition in the alluvial formations extending up to a depth of about 50 m below the ground surface. Water table is at a depth ranging from 3 to 12 m below the ground level. The electrical conductivity and concentration of major ion were less in water stored in the dam and hence the recharge of this water has led to improvement in groundwater quality. Rainfall recharge of this study area was estimated to be about 17 % of annual rainfall. About 63 % of water stored in the check dam resulted in groundwater recharge. This has led to an increase in groundwater level from 1 to 3.5 m until a distance of about 2 km. The cost of 1 m$^{3}$ of water stored by the check dam will be Rs. 1.20/-. The comparison of groundwater level, water level in the check dam and water quality assisted in demarcating the areas benefited by the storage of water in the check dam. Thus, the electrical conductivity and major ion concentration of water, which are inexpensive, rapid and easy to measure, were used as a tool for understanding the area that is benefited by the water stored in the check dam. The study brought out the efficiency of check dam as a method of MAR in improving the groundwater recharge and groundwater quality.
Starting Page	5349
Ending Page	5361
Page Count	13
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	9
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-10-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chennai MAR Recharge estimation Water level Electrical conductivity Major ions Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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