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Reviving the Ganges water machine: potential and challenges to meet increasing water demand in the Ganges River Basin
Although the Ganges River Basin (GRB) has abundant water resources, the seasonal monsoon causes a mismatch in water supply and demand, which creates severe water-related challenges for the people living in the basin, the rapidly growing economy and the environment. Addressing these increasing challenges will depend on how people manage the basin’s groundwater resources, on which the reliance will increase further due to limited prospects for additional surface storage development. This report assesses the potential of the Ganges Water Machine (GWM), a concept proposed 40 years ago, to meet the increasing water demand through groundwater, and mitigate the impacts of floods and droughts. The...
Impact Assessment of Rehabilitation Intervention in the Gal Oya Left Bank
Background on the gal oya left bank system and its rehabilitation; The intervention impact assessment model; Results from the impact assessment analysis; Comparison wuth other studies and observations; Evaluation of the importance of exogenous variables; Evaluation of the impacts of rehabilitation.
Water for Rural Development
This paper on Water for Rural Development is divided into two parts. The first part outlines the most important issues from IWMI's point of view on water for rural development, with a focus on developing countries. This part identifies, discusses and provides recommendations for key areas for interventions in water resources development and management in the context of rural development. The second part of the document provides analyses of present and future water resources in the World Bank's defined regions.
Using Remote Sensing Techniques to Evaluate Lining Efficacy of Watercourses
Studies the low-cost alternative strategy of selective lining of watercourses to reduce seepage and increase irrigated areas in the Indian subcontinent. Satellite remote-sensing (SRS) is seen as a cost-effective evaluation tool in view of its large area of synoptic and repetitive coverage.
Water for Food in Bangladesh: Outlook to 2030
This study assesses the changing consumption patterns of rice in Bangladesh and its implications on water demand by 2030. Rice dominates food and water consumption patterns in the country; it contributed to 72% of the total calorie supply from food, and 81% and 79% of the total cropped and irrigated area, respectively, in 2010. Forecasts using time series models show rice demand for food consumption, which was 172 kg/person/ year in 2008, will have a negligible increase by 2 kg/person by 2030. The demand for rice for feed will double with increasing animal products in the diet, which is only 4% of the calorie intake in 2008. Between 2000 and 2010, the total population and demand for rice hav...
Changing consumption patterns: Implications on food and water demand in India
Increasing income and urbanization are triggering a rapid change in food consumption patterns in India. This report assesses India’s changing food consumption patterns and their implications on future food and water demand. According to the projections made in this study, the total calorie supply would continue to increase, but the dominance of food grains in the consumption basket is likely to decrease by 2050, and the consumption of non-grain crops and animal products would increase to provide a major part of the daily calorie supply. Although the total food grain demand will decrease, the total grain demand is likely to increase with the increasing feed demand for the livestock. The implications of the changing consumption patterns are assessed through consumptive water use (CWU) under the assumptions of full or partial food self-sufficiency.
Locating the poor: Spatially disaggregated poverty maps for Sri Lanka
This report presents the results of subnational poverty estimation using aggregate poverty statistics and how they can help policy interventions. In particular, they estimate the poverty map across the DS division level in Sri Lanka. The poverty map depicts the proportion of households below the poverty line, which is based on household expenditure for food for obtaining the minimum calorie requirement.
Spatial Variation in Water Supply and Demand Across River Basins of India
India is a large country with regional differences in per-capita water supply and demand. Attempts to describe the water situation in India at a national level are often misleading due to the tremendous diversity in the water situation across the country. This Report analyzes the spatial variation of water supply and demand across river basins in India. The study identifies basins that are water-scarce because of inadequate water availability to meet the effective demand. It also identifies issues that are important for estimating the future water demand and for the formation of policy for future water-resources development and management.
Water Scarcity Variations Within a Country
Sri Lanka is a country with vast spatial and seasonal variations of water supply and demand. Statistics in the form of aggregated information at national level sometimes mask issues of local water scarcity. But when the same indicators are used at subunit level, a substantial area of the country comes under severe water-scarce conditions. Knowledge of subunit level water scarcities is very important because most of the food requirement of the country at present comes from water-scarce regions and projected additional requirements are also to be met by the same regions.
