Extractable Water Index (EWI): Towards a Universal Metric for Sustainable River Extraction. - Iresh, Attidiyage Don Shashika; Athapattu, Bandunee C. L.; Fernando, W. C. D. Kumari; Obeysekera, Jayantha T. B.; Rathnayake, Upaka (Water (20734441), 2026)