Water-supply 96 Water resources development 48 Water supply 34 Water 22 Water rights 16 Watershed management 14 Hydrology 13 TECHNOLOGY & ENGINEERING / Environmental / Water Supply 13 STATISTICAL REPORT; GOVERNMENT REPORT; POPULATION; AGRICULTURE; ANIMAL HUSBANDRY; FISHERIES; FOREST; POWER; WATER SUPPLY; EDUCATION; HEALTH; HOUSING; BANKING; CO-OPERATION; TRANSPORT; COMMUNICATION; PUBLIC DISTRIBUTION SYSTEM 12 Irrigation 11 Water quality management 10 Water-supply engineering 10 Water-supply, Agricultural 10 Engineering 9 Sustainable development 9 Water Supply 9 Water conservation 9 Water management 9 Drinking water 7 Economic aspects 6 Groundwater 6 Municipal water supply 6 SCIENCE / Environmental Science 6 Water Resources 6 Water quality 6 Water security 6 Water use 6 Agriculture 5 Droughts 5 Nanostructured materials 5