Related by context. Frequent words. (Click for all words.) 45 marshy 44 swamps 44 Sediment 43 tributary 43 lagoons 42 river 42 toxic waste 42 mosquito infested 42 tributaries 42 lagoon 41 sediment 41 toxic wastes 41 rivers 40 silt 40 mud flats 40 mangrove swamps 40 marshlands 40 mine tailings 39 riverbed 39 swampy 39 creeks 39 bottomland 39 creeks rivers 39 bomb craters 39 headwaters 38 tidal creeks 38 brackish waters 38 Raw sewage 38 creek 38 lakebed 38 river bottoms 38 lush forests 38 reed beds 38 brackish 38 bulrushes 38 mud 38 Swamps 37 swamp 37 burlap bags 37 waterways 37 waterway 37 boulder strewn 37 evaporation ponds 37 raw sewage 37 carcasses 37 river basin 36 overland 36 slops 36 jungle 36 canals 36 river valleys 36 marshland 36 mangrove swamp 36 river deltas 36 lake 36 aquatic weeds 36 dry riverbeds 36 garbage dump 36 marsh 36 waterholes 36 garbage dumps 36 sewage lagoons 35 riverbanks 35 trucked 35 riverbank 35 marshes 35 foul smelling 35 untreated wastewater 35 dredge spoils 35 poisonous chemicals 35 underground aquifers 35 tailings ponds 35 lakes 35 silted 35 forested hills 35 savannah 35 watercourse 34 dense jungle 34 wetlands 34 ponds 34 fertile soil 34 contaminated sediments 34 collect firewood 34 rice paddies 34 savannahs 34 bottomlands 34 streambed 34 sugarcane fields 34 poisons 34 polluted groundwater 34 sewage 34 sludge 34 jungles 34 dumpsites 34 marsh grasses 34 dredged material 34 irrigation canals 34 portages 34 watercourses 34 fetid 34 ravines