Assessement of Decadal Changes in Groundwater Levels through Trend Analysis: A Case Study from Nuthankal, Telangana, India
Cherupally Vinod
Department of Statistics and Mathematics, College of Agriculture, Rajendranagar, PJTAU, Hyderabad, Telangana-500030, India.
Santosha Rathod *
ICAR- National Institute of Abiotic Stress Management, Baramati, Maharashtra, India and ICAR- Indian Institute of Rice Research (IIRR), Hyderabad, Telangana-500030, India.
K Supriya
Department of Statistics and Mathematics, College of Agriculture, Rajendranagar, PJTAU, Hyderabad, Telangana-500030, India.
B.Balaji Naik
Center for Digital Agriculture, Rajendranagar, PJTAU, Hyderabad, India.
*Author to whom correspondence should be addressed.
Abstract
This study investigated groundwater level changes in Nuthankal village, Suryapet district, Telangana, using monthly data from 2014 to 2024. Statistical trend analysis methods, including the Mann-Kendall test, Sen’s slope estimator, Modified Mann–Kendall test, and Innovative Trend Analysis, were applied to detect patterns in groundwater fluctuations. The results revealed a significant upward trend in groundwater levels, with the water table having risen from 10–12 meters to 3–5 meters below ground over the decade. The most pronounced improvements occured during the monsoon, post-monsoon, and winter seasons, attributed to enhanced recharge and reduced extraction. These findings highlighted the effectiveness of advanced trend analysis techniques in groundwater monitoring and emphasized the importance of sustained water management practices for ensuring long-term water security in the region.
Keywords: Groundwater trends, mann–kendall test, sen’s slope estimator, innovative trend analysis, water table fluctuations, Telangana groundwater