Related by context. Frequent words. (Click for all words.) 78 silting 71 sedimentation 64 silt 62 soil erosion 59 salinity 57 sediment 55 coastal erosion 54 drainage 54 dredging 54 acidification 53 subsidence 53 desilting 52 turbidity 52 environmental degradation 52 algal blooms 52 wetlands 51 submergence 51 Sediment 51 waterlogging 50 mangroves 50 dam 50 watercourse 50 wetland 49 outfall 49 riprap 49 dredged material 49 desertification 49 ponding 49 tributaries 49 dams 49 erosion 49 drainages 49 weirs 48 overgrazing 48 culverts 48 damming 48 landslip 48 effluents 48 weir 48 pollution 48 riverbanks 48 inundation 48 rivers 48 mangrove forests 47 floodplains 47 nullah 47 freshwater 47 seepage 47 riverbed 47 stormwater drainage 47 stormwater runoff 47 algae blooms 47 tributary 47 river 47 watercourses 47 alkalinity 47 dissolved oxygen 47 estuaries 47 hydrological 46 deforestation 46 sewage overflows 46 mangrove 46 urbanization 46 estuary 46 embankments 46 sediments 46 impervious surfaces 46 flooding 46 stormwater 46 floodplain 46 rip rap 46 soil fertility 46 seagrass 46 lake 46 rapid urbanization 45 river basin 45 basin 45 catchment 45 catchments 45 dewatering 45 heavy rainfalls 45 spillways 45 spillway 45 untreated sewage 45 drainage ditches 45 overgrowth 45 Dredging 44 snowmelt 44 beach erosion 44 headwaters 44 Erosion 44 waterways 44 jetties 44 creek 44 Drainage 44 encroachments 44 groundwater 44 ponds 44 riverine 43 creeks 43 culvert