LARHYSS Journal
Volume 20, Numéro 2, Pages 141-157
2023-06-10

Assessing The Decadal Groundwater Level Fluctuation-a Case Study Of Gujarat, India



Authors : Rajput Dipesh . Mistry Kinjal . Bhoraniya Jay . Umrigar Jaini . Waikhom Sahita . Mehta Darshan .

Abstract

Groundwater extractions have increased severely and have been consistently reported across the globe. The overexploitation of groundwater resources may cause a serious decline in water levels. Groundwater level fluctuations and their trends can be used to estimate changes in aquifer storage resulting from the effects of groundwater withdrawal and recharge. In Gujarat, very regions are dependent on groundwater for irrigation. Thus, it is necessary to assess the degree of exploitation and analyze the groundwater level trend in the Gujarat state. This study examined the pre- and postmonsoon groundwater level fluctuations using statistical methods over the 26 districts of Gujarat for a period of 11 years (2010-2020). Fourteen districts showed a rising trend, whereas 4 districts showed a falling trend for both the premonsoon and postmonsoon seasons, and 8 districts showed a rising trend during the premonsoon season and a falling trend during the postmonsoon season, including a reverse trend. The average annual rise in groundwater level was detected with a maximum rise (1.7064 m/yr) at Ahmedabad, whereas an average annual decline was detected with a maximum decline (1.4092 m/yr) at Gandhinagar during the premonsoon season. The rising trend is attributed to the construction of water conservation structures, and the falling trend is attributed to the overexploitation of groundwater.

Keywords

Decadal groundwater ; F test ; Groundwater level fluctuation ; Zones of Gujarat ; overexploitation of groundwater ; Statistical method

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