This study focuses on the water supply and demand variations at the district level in Sri Lanka. The results indicate wide spatial and seasonal variations. The results indicate that, according to most water scarcity criteria, several districts in the dry zone are already facing either seasonal or year-round absolutely severe water scarce conditions. At the current level of irrigation efficiency, several more districts enter into this category. Also, contrary to common belief, some districts in the wet zone are also identified as water scarce in the economic sense. Though these districts have ample water supply to meet their demand, they will have to at least double their withdrawals to meet the 2025 demand.  

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