Application of geospatial modeling in deciphering groundwater recharge site and structures in Paschim Medinipur district
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ORIGINAL ARTICLE
Application of geospatial modeling in deciphering groundwater recharge site and structures in Paschim Medinipur district, India Raju Thapa1 · Srimanta Gupta2 · Molla Imdadul Haque2 · Harjeet Kaur1 Received: 18 September 2019 / Accepted: 1 September 2020 © Springer Nature Switzerland AG 2020
Abstract Indiscriminate urbanization and population explosion have put tremendous stress on groundwater resource of Paschim Medinipur, an agriculture-dominated area. In this aspect delineation of potential groundwater recharge zones can play a crucial role in the long run. Initially, ten different influencing factors i.e., geology, geomorphology, rainfall, aquifer material, drainage density, soil type, lineament and fault density, slope, elevation and Land use land cover (LULC) are integrated into ArcGIS environment to generate the potential groundwater recharge zones (GWRZ) within the study area. The final GWRZ was categorized into three classes namely high, medium and low where about 33% (3152.46 sq. km) of the total area fall under high GWRZ, about 25% (2379.02 sq. km) is covered by medium GWRZ and low GWRZ covers about 39.96% (3743.16 sq. km) of the study area. Predicted model is validated with water table fluctuation data collected from 87 monitoring wells by implementing Success Rate Curve (SRC) and the Prediction Rate Curve (PRC) where an accuracy of 81% prediction is observed. The study of WTF trend for past 23 years using the multiplicative model of time series shows a significant declining trend in-depth to water-table. Based on the model outcome various recharge structures are recommended in the specific locations of the study area which may be further confirmed through field investigation before implementation. Outcomes of the present study can be a first-hand tool to the policymakers, planners and government officials for sustainable water resource management in the study area. Keywords Potential groundwater recharge zone · Multi-influencing factor technique (MIF) · Water-table fluctuation (WTF) · Multiplicative model of time series · Paschim medinipur · West bengal
Introduction Groundwater resources are one of the most crucial natural resources of the nation. Over-exploitation and enormous population expansion continuously increase the demand of groundwater resources which leads to its gradual reduction and becomes one of the most serious emerging problems Electronic supplementary material The online version of this article (https://doi.org/10.1007/s40899-020-00442-3) contains supplementary material, which is available to authorized users. * Srimanta Gupta [email protected] 1
Geo‑meteorological Risks Management Division, National Institute of Disaster Management, Ministry of Home Affairs, Government of India, New Delhi 110 001, India
Environmental Geoscience Laboratory, Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India
2
facing by the world today (Kaliraj et al. 2013; Magesh et al. 2013; Kazakis and Voudour
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