Unveiling the Sustainability Quotient: Blue and Green Evapotranspiration Dynamics Analysis in the Upper Cauvery Basin

Efficient management of water resources is imperative for sustainable development, necessitating a meticulous partitioning of evapotranspiration into blue and green components. Our study focuses on the Upper Cauvery region, examining water utilization from both rainfed and irrigated sources. Modifying the Hoekstra framework in the context of employing geospatial data and machine learning techniques, we partitioned water resources into blue (ETb) and green (ETg) evapotranspiration, unravelling valuable insights. Results from the decade-long analysis (2010-2020) reveal that ETb significantly outweighs ETg in this region. Examining the temporal trends, both ETb and ETg exhibit a consistent upward trajectory over the specified period, illustrating the evolving water consumption dynamics from 2010 to 2020. The implications of our study extend to potential applications in sustainable water resource utilization and management practices, providing a valuable contribution to the scientific community and policymakers alike. The findings will also raise awareness about the importance of using water resources responsibly in this vital geographical area.