AUC GEOGRAPHICA

This article investigates the fluctuations in groundwater level (GWL) and groundwater recharge in response to rainfall variability using 2001–2021 rainfall data from four districts in West Bengal, India: Purulia, Bankura, West Midnapore, and East Midnapore. Purulia and Bankura have a tropical semi-arid to sub-humid type of climate, while West Midnapore and East Midnapore have a tropical wet-dry monsoon climate. The GWL analysis was performed using the Mann-Kendall Test (M-K Test) and Sen’s Slope Esti-mator, while groundwater recharge was estimated using empirical expressions, including the Chaturvedi and Modified Chaturvedi formulas, and the Maxey-Eakin and Krishna Rao methods. We used pre-monsoon and post-monsoon GWL data for the GWL trend analysis and monthly rainfall data for groundwater recharge estimation. To assess the impact of climate change on GWL variation for the 2022–2050 period, the global climatic model (GCM) CanESM5-SSP126 rainfall data was used. The trend analysis of ground¬water level at East Midnapore and West Midnapore shows a higher rate of decline (GWL beyond 15 m bgl) compared to Purulia and Bankura during both the pre- and post-monsoon periods. Groundwater recharge estimates increased linearly with rainfall and the results show the Modified Chaturvedi formula as the most suitable in the selected districts. Additionally, new empirical expressions developed between rainfall and groundwater levels showed a better fit for Bankura and Purulia stations. These expressions suggest that rainfall will increase in Purulia toward 2050, leading to a subsequent rise in groundwater levels.

1. Ajami, H. (2021): Geohydrology: Groundwater. In: Alderton, D., Elias, S. A. (Eds.), Encyclopedia of Geology (Reference Module in Earth Systems and Environmental Sciences); Elsevier, pp. 408-415. CrossRef

2. Asoka, A., Gleeson, T., Wada, Y., Mishra, V. (2017): Relative contribution of monsoon precipitation and pumping to changes in groundwater storage in India. Nature Geoscience 10(2), 109-117. CrossRef

3. Barik, B., Ghosh, K. (2024): Evaluating groundwater potential in water-deficit laterite zones of Eastern India using RS and GIS techniques, combining an analytical hierarchical process for sustainable water resources management. Groundwater for Sustainable Development 27: 101344. CrossRef

4. Bera, B., Shit, P. K., Sengupta, N., Saha, S., Bhattacharjee, S. (2022): Steady declining trend of groundwater table and severe water crisis in unconfined hard rock aquifers in extended part of Chota Nagpur Plateau, India. Applied Water Science 12: 31. CrossRef

5. Bharti, V., Roshni, T., Jha, M. K., Ghorbani, M. A., Ibrahim, O. R. A. (2024): Complex network analysis of groundwater level in Sina Basin, Maharashtra, India. Environment, Development and Sustainability 26, 18017-18032. CrossRef

6. Bhattacharya, R. K., Chatterjee, N. D., Das, K. (2020): Land use and land cover change and its resultant erosion susceptibility: An appraisal using RUSLE and logistic regression in a tropical plateau basin of West Bengal, India. Environment, Development and Sustainability 23, 1411-1446. CrossRef

7. Bhunia, G. S., Samanta, S., Pal, D. K., Pal, B. (2012): Assessment of groundwater potential zone in Paschim Medinipur District, West Bengal: A meso-scale study using GIS and remote sensing. Approach. Journal of Environment and Earth Science 2(5), 41-59.

8. CGWB (2022). Ground Water Yearbook of West Bengal & Andaman & Nicobar Islands (2021-2022) (Technical Report Series D No. 287). Eastern Region, Kolkata: Ministry of Jal Shakti, Department of Water Resources, River Development & Ganga Rejuvenation, Government of India. Available online: https://cgwb.gov.in/cgwbpnm/public/download/692 (accessed on 2 February 2025).

9. Chakraborty, M., Mukherjee, A., Ahmed, K. M. (2022): Regional-scale hydrogeochemical evolution across the arsenic-enriched transboundary aquifers of the Ganges River Delta system, India and Bangladesh. Science of the Total Environment 823: 153490. CrossRef

10. Chakraborty, S., Roshni, T. (2025): Analysis of rainfall epochs in changing climate of Kangsabati River Basin, India. AUC Geographica 61(1), 16-32. CrossRef

11. Chakraborty, S., Maity, P. K., Das, S. (2020): Investigation, simulation, identification, and prediction of groundwater levels in coastal areas of Purba Midnapur, India, using MODFLOW. Environment, Development and Sustainability 22(4), 3805-3837. CrossRef

12. Chatterjee, U. (2018): Water scarcity in semi-arid regions of Bankura District, West Bengal, India: Problems and prospects. Khoj: An International Peer Reviewed Journal of Geography 5(1), 87-96. CrossRef

13. Chaturvedi, R. S. (1973): A note on the investigation of groundwater resources in western districts of Uttar Pradesh. Annual Report, UP Irrigation Research Institute, 86-122.

14. Das, S., Chatterjee, M., Bhattacharya, S. (2015): Climatic classification and variability in the dry tracts of Purulia and Bankura districts, West Bengal, India. Asian Journal of Environmental Research 7(1), 45-60.

15. DSR (2022): District Survey Report of Paschim Medinipur District, West Bengal (Report). Government of West Bengal, India. Available online: https://www.dmm.gov.in/pdfs/DSR/DSR_of_Paschim_Medinipur.pdf (accessed on 8 February 2025).

16. Ghosh, K., Singh, P., Kumar, L. (2015): Monsoon dynamics and climatic classification in the coastal districts of West Bengal. Climate Research Letters 8(4), 77-91.

17. Ghosh, S., Sarkar, B., Islam, A., Shit, P. K., Quesada-Román, A., Gazi, H. A. R. (2022): Surface Water and Groundwater Suitability for Irrigation Based on Hydrochemical Analysis in the Lower Mayurakshi River Basin, India. Geosciences 12(11): 415. CrossRef

18. Goswami, A., Banerjee, R., Dutta, T. (2022): Spatio-temporal climate dynamics of the western Rarh region, West Bengal. International Journal of Climatology and Weather Science 14(3), 201-219.

19. Hamed, Y., Hadji, R., Redhaounia, B., Zighmi, K., Bâali, F., El Gayar, A. (2018): Climate impact on surface and groundwater in North Africa: a global synthesis of findings and recommendations. Euro-Mediterranean Journal for Environmental Integration 3: 25. CrossRef

20. Himayoun, D., Roshni, T. (2019): Spatio-temporal variation of drought characteristics, water resource availability and the relation of drought with large scale climate indices: A case study of Jhelum basin, India. Quaternary International 525, 140-150. CrossRef

21. Jasechko, S., Seybold, H., Perrone, D., Fan, Y., Shamsudduha, M., Taylor, R. G., Fallatah, O., Kirchner, J. W. (2024): Rapid groundwater decline and some cases of recovery in aquifers globally. Nature 625, 715-721. CrossRef

22. Kendall, M. G. (1955): Rank correlation methods. 2nd ed.; Charles Griffin & Co. Ltd.: London, 196 pp.

23. Kendall, M. G. (1975): Rank Correlation Methods. 4th ed.; Charles Griffin & Co. Ltd.: London, 202 pp.

24. Kumar, C. P., Seethapathi, P. V. (2002): Assessment of natural groundwater recharge in Upper Ganga Canal command area. Journal of Applied Hydrology 15(4), 13-20.

25. MacDonald, A. M., Bonsor, H. C., Ahmed, K. M., Burgess, W. G., Basharat, M., Calow, R. C., Dixit, A., Foster, S. S. D., Gopal, K., Lapworth, D. J., Lark, R. M., Moench, M., Mukherjee, A., Rao, M. S., Shamsudduha, M., Smith, L., Taylor, R. G., Tucker, J., van Steenbergen, F., Yadav, S. K. (2016): Groundwater quality and depletion in the Indo-Gangetic Basin mapped from in situ observations. Nature Geoscience 9, 762-766. CrossRef

26. Maliva, R. G. (2020): Vadose Zone Hydrology Basics. In: Anthropogenic Aquifer Recharge. Springer Hydrogeology; Springer: Cham. CrossRef

27. Mann, H. B. (1945): Nonparametric Tests Against Trend. Econometrica 13(3), 245-259. CrossRef

28. Maxey, G. B., Eakin, T. E. (1949): Ground Water in White River Valley, White Pine, Nye, and Lincoln Counties, Nevada. Water Resources Bulletin No. 8, Nevada State Engineer, 59 pp.

29. Mishra, V., Aadhar, S., Asoka, A., Pai, S., Kumar, R. (2016): Frequency of the 2015 monsoon-season drought in the Indo-Gangetic Plain. Geophysical Research Letters 43(23), 12,102-12,112. CrossRef

30. Mokadem, N., Boughariou, E., Mudarra, M., Ben Brahim, F., Andreo, B., Hamed, Y., Bouri, S. (2018): Mapping potential zones for groundwater recharge and its evaluation in arid environments using a GIS approach: Case study of North Gafsa Basin (Central Tunisia). Journal of African Earth Sciences 141, 107-117. CrossRef

31. Mukherjee, A., Saha, D., Harvey, C. F., Taylor, R. G., Ahmed, K. M., Bhanja, S. N. (2015): Groundwater systems of the Indian Sub-Continent. Journal of Hydrology: Regional Studies 4, part A, 1-14. CrossRef

32. Mukhopadhyay, S. (1992): Terrain analysis and its impact on land use, Kangsabati River Basin; Vohra Publications, 309 pp.

33. O'Neill, B. C., Tebaldi, C., van Vuuren, D. P., Eyring, V., Friedlingstein, P., Hurtt, G., Knutti, R., Kriegler, E., Lamarque, J.-F., Lowe, J., Meehl, G. A., Moss, R., Riahi, K., Sanderson, B. M. (2016): The Scenario Model Intercomparison Project (ScenarioMIP) for CMIP6. Geoscientific Model Development 9(9), 3461-3482. CrossRef

34. Osborn, N. I., Hardy, R. H. (1999): Statewide groundwater vulnerability map of Oklahoma. Oklahoma Water Resources Board Technical Report 99-1. Available online: https://oklahoma.gov/content/dam/ok/en/owrb/documents/science-and-research/hydrologic-investigations/statewide-groundwater-vulnerability-map-1999.pdf (accessed on 5 January 2025).

35. Patle, G. T., Singh, D. K., Sarangi, A., Rai, A., Khanna, M., Sahoo, R. N. (2015): Time Series Analysis of Groundwater Levels and Projection of Future Trend. Journal of the Geological Society of India 85(2), 232-242. CrossRef

36. Riahi, K., van Vuuren, D. P., Kriegler, E., Edmonds, J., O'Neill, B. C., Fujimori, S., Bauer, N., Calvin, K., Dellink, R., Fricko, O., Lutz, W., Popp, A., Crespo Cuaresma, J., KC, S., Leimbach, M., Jiang, L., Kram, T., Rao, S., Emmerling, J., Ebi, K., Tavoni, M. (2017): The Shared Socioeconomic Pathways and their energy, land use, and greenhouse gas emissions implications: An overview. Global Environmental Change 42, 153-168. CrossRef

37. Roxy, M. K., Ghosh, S., Pathak, A., Athulya, R., Mujumdar, M., Murtugudde, R., Terray, P., Rajeevan, M. (2017): A threefold rise in widespread extreme rain events over central India. Nature Communications 8: 708. CrossRef

38. Roy, P. K., Sarkar, A., Saha, S., Ray, P., Roy, M. B. (2024): Spatio-temporal analysis of precipitation in eastern India over three decades. Spatial Information Research 32, 727-738. CrossRef

39. Sen, P. K. (1968): Estimates of the Regression Coefficient Based on Kendall's Tau. Journal of the American Statistical Association 63(324), 1379-1389. CrossRef

40. Shah, T. (2017): Sustainable groundwater governance: India's challenge and response. The Journal of Governance 14, 23-45.

41. Singh, D., Tsiang, M., Rajaratnam, B., Diffenbaugh, N. S. (2014): Observed changes in extreme wet and dry spells during the South Asian summer monsoon season. Nature Climate Change 4, 456-461. CrossRef

42. Stempvoort, D. V., Ewert, L., Wassenaar, L. (1993): Aquifer vulnerability index: A GIS-compatible method for groundwater vulnerability mapping. Canadian Water Resources Journal / Revue Canadienne Des Ressources Hydriques 18(1), 25-37. CrossRef

43. Wada, Y., van Beek, L. P. H., van Kempen, C. M., Reckman, J. W. T. M., Vasak, S., Bierkens, M. F. P. (2010): Global depletion of groundwater resources. Geophysical Research Letters 37(20): L20402. CrossRef

44. Yazdian, M., Rakhshandehroo, G., Nikoo, M. R., Mooselu, M. G., Gandomi, A. H., Honar, T. (2021): Groundwater sustainability: Developing a non-cooperative optimal management scenario in shared groundwater resources under water bankruptcy conditions. Journal of Environmental Management 292: 112807. CrossRef