DROUGHT WATER STORAGE 71 WATER RESOURCES 64 GROUNDWATER 60 RIVERS 57 WATER RESOURCE 57 IRRIGATION 54 WATER MANAGEMENT 54 WATER SUPPLY 54 SURFACE WATER 53 WATER QUALITY 50 RIVER BASIN 49 WATER SECTOR 49 WATER USE 49 RAINFALL 48 WATER RESOURCES MANAGEMENT 48 RESERVOIRS 47 WATER AVAILABILITY 46 WATER DEMAND 44 CLIMATE CHANGE 43 FLOODS 43 DRAINAGE 41 RIVER BASINS 40 RUNOFF 39 WATER RESOURCE MANAGEMENT 38 WATER SCARCITY 38 CONSTRUCTION 37 STORAGE CAPACITY 37 WATER INFRASTRUCTURE 37 AQUIFERS 36