Related by context. Frequent words. (Click for all words.) 57 damming 56 Swamps 53 Tributary 51 Snowmelt 50 headwater 49 hydro electric dams 49 rivers 49 salination 49 Imperiled 49 Troubled Waters 49 Heavy Rains 48 dammed 48 dams 48 Aquifers 47 tributary 47 Rebecca Solnit 47 Habitat Restoration 47 Deluge 46 Outflow 46 Oil Spills 46 Hydrological 46 river basin 46 Flash Floods 46 Emergency Declared 46 Salinity 45 headwaters 45 tributaries 45 Erosion 45 Brahmaputra River 45 river deltas 45 silting 45 Cholera Outbreak 45 severe droughts 45 Ice jams 45 Soil erosion 44 Droughts 44 Polluted 44 Flood Warnings 44 Boat Capsizes 44 Floods 44 Creek tributary 44 glacial retreat 44 dam 44 River Basins 44 Flowing 44 Thousands Flee 44 Floods Kill 44 Humanitarian Crisis 44 hydrology 44 Floodway 43 Wet Weather 43 Dams 43 glacial melt 43 Watersheds 43 deltaic 43 hydropower dam 43 Water Shortage 43 River basin 43 Altamaha 43 Boat sinks 43 Flooding 43 Hydropower Project 43 flooding 43 Invasions 43 wetland ecosystems 43 Quake Hits 43 streamflow 43 aquifer recharge 43 Boating Accident 42 sedimentation 42 Hetch Hetchy Valley 42 oxbows 42 hydropower dams 42 Omo River 42 saltwater intrusion 42 freshwater ecosystems 42 Earthquake Shakes 42 Tributaries 42 river basins 42 Draining 42 siltation 42 Amu Darya 42 Snake River Basin 42 Economic Impacts 42 Earthquake Hits 42 Death Toll Rises 42 Erosion Control 42 irrigated agriculture 42 Precarious 41 Rediscovery 41 soil erosion 41 Bus plunges 41 deltas 41 Reservoirs 41 Polity 41 Hydropower 41 tidal marshes 41 Devastating floods 41 Sinkholes 41 Hydrology 41 silts