Investigating Groundwater Condition and Seawater Intrusion Status in Coastal Aquifer Systems of Eastern India
| Autor: | Lingaraj Dhal, Madan K. Jha, Subrata Halder |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
coastal aquifers Seawater intrusion Geography Planning and Development 0207 environmental engineering Water supply Aquifer spatio-temporal variability 02 engineering and technology Aquatic Science 01 natural sciences Biochemistry Coastal aquifer seawater intrusion 020701 environmental engineering TD201-500 0105 earth and related environmental sciences Water Science and Technology geography geography.geographical_feature_category Water supply for domestic and industrial purposes business.industry Hydraulic engineering Block (meteorology) Current (stream) Trend analysis groundwater fluctuation Environmental science trend analysis TC1-978 Water resource management business Groundwater |
| Zdroj: | Water Volume 13 Issue 14 Water, Vol 13, Iss 1952, p 1952 (2021) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w13141952 |
| Popis: | Providing sustainable water supply for domestic needs and irrigated agriculture is one of the most significant challenges for the current century. This challenge is more daunting in coastal regions. Groundwater plays a pivotal role in addressing this challenge and hence, it is under growing stress in several parts of the world. To address this challenge, a proper understanding of groundwater characteristics in an area is essential. In this study, spatio-temporal analyses of pre-monsoon and post-monsoon groundwater levels of two coastal aquifer systems (upper leaky confined and underlying confined) were carried out in Purba Medinipur District, West Bengal, India. Trend analysis of seasonal groundwater levels of the two aquifers systems was also performed using Mann-Kendall test, Linear Regression test, and Innovative Trend test. Finally, the status of seawater intrusion in the two aquifers was evaluated using available groundwater-quality data of Chloride (Cl−) and Total Dissolved Solids (TDS). Considerable spatial and temporal variability was found in the seasonal groundwater levels of the two aquifers. Further, decreasing trends were spotted in the pre-monsoon and post-monsoon groundwater-level time series of the leaky confined and confined aquifers, except pre-monsoon groundwater levels in Contai-I and Deshpran blocks, and the post-monsoon groundwater level in Ramnagar-I block for the leaky confined aquifer. The leaky confined aquifer in Contai-I, Contai-III, and Deshpran blocks and the confined aquifer in Nandigram-I and Nandigram-II blocks are vulnerable to seawater intrusion. There is an urgent need for the real-time monitoring of groundwater levels and groundwater quality in both the aquifer systems, which can ensure efficient management of coastal groundwater reserves. |
| Databáze: | OpenAIRE |
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