Related by context. Frequent words. (Click for all words.) 54 Mekong river 52 Bohai Sea 51 trans boundary 50 heavily polluted 49 Beibu Gulf 48 Xijiang River 48 Yangtze River 48 Poyang Lake 48 navigable rivers 48 Mekong River 47 Taihu Lake 47 deltaic 47 river deltas 47 Three Gorges Reservoir 47 Penglai 47 rivers 46 aquatic ecosystem 46 transboundary 45 basin 45 headwater 45 Yangtze Delta 45 waterways 44 estuary 44 Yangtze 44 Three Gorges reservoir 44 Amur River 44 Brahmaputra River 44 Soil erosion 44 river Brahmaputra 44 waterway 44 Yangtze river 44 riverine 44 silts 44 Cuu Long 43 Yangshan 43 Qinghai Tibet Plateau 43 Tonle Sap 43 river basin 43 hydropower dam 43 polluted rivers 43 Dongting Lake 43 Nansha 42 Water Diversion 42 wetland ecosystems 42 basins 42 Mekong 42 Hooghly river 42 silting 42 siltation 42 rampant deforestation 42 biodiversity hotspot 42 Huai River 42 Wissahickon Creek 42 tributary 42 pollution abatement 42 Mekong delta 42 Brahmaputra 42 Chao Phraya River 42 oxbows 41 Zhoushan 41 Turag 41 streambanks 41 river 41 groundwater depletion 41 hydro electric dams 41 Manzhouli 41 Chiang Saen 41 tributaries 41 Huangpu River 41 Qinzhou 41 Subarnarekha 41 Heihe 40 IWRM 40 biodiverse 40 gully erosion 40 Dawei 40 headwaters 40 Shandong provinces 40 Caofeidian 40 upstream 40 salination 40 environmental degradation 40 Vietnam Mekong Delta 40 Saemangeum 40 tributary streams 40 Yalu 40 Jinsha 40 Brahmaputra river 40 ecological 40 Huaihe River 40 watersheds 40 rapid urbanization 40 navigable 39 massive Three Gorges 39 wildlife corridors 39 Chao Phraya river 39 Amu Darya 39 freshwater 39 Rapid urbanization 39 Nyingchi 39 delta