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Abstract <p>The Upper Bhima Basin, a vital sub-basin of the Krishna River system in Maharashtra, India, plays a critical role in regional ecology, water resource management, and agricultural productivity. The present study looks at monthly, seasonal, and yearly rainfall variations in the Upper Bhima basin between 1991 and 2021. Using statistical techniques such as linear regression and the Mann–Kendall test, the analysis revealed significant trends. Notable findings include increasing rainfall in areas like Kalburgi and the river’s source region, while Solapur shows a declining trend. Seasonal analysis highlights rising variability during the pre- and post-monsoon periods, alongside a steady increase in monsoon rainfall. December exhibits significant rainfall variability, as indicated by a high coefficient of variation. These patterns seem to be driven by regional climate and topographical factors. These trends have profound implications for flood risks, agriculture, and water resource management, emphasizing an urgent need for adaptive strategies. This study provides valuable insights to support sustainable water resource planning and mitigate the impacts of climate change in this ecologically and economically significant region.</p> Research highlights <p><OrderedList> <ListItem> <ItemNumber>1.</ItemNumber> <ItemContent> <p>Rainfall in the Upper Bhima Basin (1991-2021) shows high variability across seasons and locations.</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>2.</ItemNumber> <ItemContent> <p>Statistical tests revealed distinct increasing and decreasing rainfall trends across the basin.</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>3.</ItemNumber> <ItemContent> <p>Correlation analysis indicates complex relationships between seasonal rainfall patterns.</p> </ItemContent> </ListItem> </OrderedList></p>

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Spatio-temporal trends and variability of rainfall in the Upper Bhima River Basin, India

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Pooja Jaygade,
  • Vrushali K Bangar,
  • Sneha Kulkarni,
  • Amit G Dhorde,
  • Labani Saha

摘要

Abstract

The Upper Bhima Basin, a vital sub-basin of the Krishna River system in Maharashtra, India, plays a critical role in regional ecology, water resource management, and agricultural productivity. The present study looks at monthly, seasonal, and yearly rainfall variations in the Upper Bhima basin between 1991 and 2021. Using statistical techniques such as linear regression and the Mann–Kendall test, the analysis revealed significant trends. Notable findings include increasing rainfall in areas like Kalburgi and the river’s source region, while Solapur shows a declining trend. Seasonal analysis highlights rising variability during the pre- and post-monsoon periods, alongside a steady increase in monsoon rainfall. December exhibits significant rainfall variability, as indicated by a high coefficient of variation. These patterns seem to be driven by regional climate and topographical factors. These trends have profound implications for flood risks, agriculture, and water resource management, emphasizing an urgent need for adaptive strategies. This study provides valuable insights to support sustainable water resource planning and mitigate the impacts of climate change in this ecologically and economically significant region.

Research highlights

1.

Rainfall in the Upper Bhima Basin (1991-2021) shows high variability across seasons and locations.

2.

Statistical tests revealed distinct increasing and decreasing rainfall trends across the basin.

 3.

Correlation analysis indicates complex relationships between seasonal rainfall patterns.