Related by context. Frequent words. (Click for all words.) 58 Zambezi river 56 Murrumbidgee River 56 Omo River 55 Zambezi River 55 rivers 55 Brahmaputra River 54 tributary streams 53 catchments 53 trans boundary 53 Soil erosion 52 headwater 52 irrigated agriculture 51 Nile basin 51 Amur River 51 Cahora Bassa 51 Gandak 51 watercourse 51 hydro electric dams 51 creeks streams 50 Tonle Sap 50 river basin 50 monsoonal rains 50 Fryingpan River 50 silts 50 salination 50 Lake Turkana 50 Xijiang River 50 glacial melt 50 alluvial deposits 50 Mekong river 50 hydrological 50 drainage basins 50 Poyang Lake 50 groundwater aquifers 49 coulees 49 Huaihe River 49 Vaal River 49 catchment 49 Menindee Lakes 49 Luangwa 49 Zambezi 49 Skeena River 49 Brahmaputra 49 tributaries 49 river 49 fluvial 48 hydro lakes 48 flowage 48 Tungabhadra 48 mainstem 48 irrigated crops 48 alluvial diamonds 48 Amu Darya 48 desilted 48 Gippsland Lakes 48 deltas 48 Lake Kinneret 48 diking 48 wetland ecosystems 48 Ghaggar 48 lowland flooding 48 Narmada river 48 siltation 48 Lake Kariba 47 Norfork Lake 47 lakeshores 47 creeks rivers 47 aquifer recharge 47 streams creeks 47 Brahmaputra river 47 Warragamba Dam 47 pastoralist communities 47 tributary 47 Cauvery river 47 river basins 47 Nyando 47 transboundary 47 settling ponds 47 hydro dams 47 flows 47 streamflows 47 Athabasca River 47 Yangtze river 47 tailwater 47 Indus river 47 Okavango 47 Indus Basin 47 Susitna River 47 Lake Lavon 47 Huai River 47 Akosombo Dam 47 tidal rivers 47 cumecs 47 waterholes 47 Chickamauga Creek 47 river embankments 47 Yangtze 47 melting snowpack 47 Murrumbidgee 47 Godavari river 47 damming