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GIS-based identification of potential watershed recharge zones using analytic hierarchy process in Sikkim Himalayan region

Zimik, HV and Angchuk, T and Misra, AK and Ranjan, RK and Wanjari, N and Basnett, S (2022) GIS-based identification of potential watershed recharge zones using analytic hierarchy process in Sikkim Himalayan region. In: Applied Water Science, 12 (11).

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Official URL: https://doi.org/10.1007/s13201-022-01758-5


Identification of groundwater recharge zone is an important factor for water resource management in any area. The present study investigates the potential water recharge zones in the Sikkim state, a mountain region of the Eastern Himalayas. To identify potential watershed recharge zone in the region, a combination of geographic information system (GIS)-based weighted overlay index (WOI) tools and analytic hierarchy process (AHP) pairwise matrix techniques was applied. The delineated watershed recharge sites were classified into five different potential zones. The results show that the majority of the study area (54.22) was under moderate recharge potential zone. Some of the suitable recharge potential sites are forest-covered regions; therefore, the construction of surface check dams could be a suitable recharge method; it will escalate the discharge in springs and also help to make them perineal. This study provides first-hand information on the groundwater recharge potential of East Sikkim, where the populace depends largely on spring water discharge. Also, it is useful in selecting areas for digging staggered contour trenches, pits, and other structures to recharge the spring water and improve the watershed management system.

Item Type: Journal Article
Publication: Applied Water Science
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to the Author(s).
Keywords: Geographic information systems; Groundwater resources; Hierarchical systems; Recharging (underground waters); Soil conservation; Water conservation; Water management; Watersheds, Ground water recharge; Groundwater recharge potential; Groundwater recharge zones; Himalayas; Mountain regions; Sikkim Himalaya; Spring water; Water recharges; Water resources management; Watersheds management, Analytic hierarchy process, analytical hierarchy process; flow modeling; GIS; groundwater resource; numerical model; recharge; satellite data; watershed, Himalayas; Sikkim Himalayas
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Date Deposited: 28 Oct 2022 05:39
Last Modified: 28 Oct 2022 05:39
URI: https://eprints.iisc.ac.in/id/eprint/77624

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