Related by context. Frequent words. (Click for all words.) 63 sediment 60 watercourse 59 algal bloom 58 silt 57 siltation 57 wetlands 56 wetland 56 dredged material 56 silting 56 sedimentation 55 aquatic weeds 55 Didymo 55 Sediment 55 shoreline erosion 55 tidal wetlands 54 Salinity 54 algal blooms 54 estuary 54 contaminated sediments 54 coastal erosion 54 stormwater drains 53 evaporation ponds 53 weir 53 salinity 53 outfalls 53 freshwater wetlands 53 dredge spoils 53 contaminated sediment 52 sediments 52 reed beds 52 catchment 52 shoaling 52 saltwater intrusion 52 landslips 52 floodplain 52 beaver dams 52 nutrient runoff 52 lakebed 52 floodplains 52 outfall 52 watercourses 52 woody debris 52 weirs 51 aquatic habitats 51 leachate 51 revegetation 51 intertidal 51 sediment runoff 51 biota 51 toxic algae 51 seepage 51 contaminants 51 turbidity 51 soils 51 aquatic ecosystems 51 waterways 51 streambeds 51 groundwater 51 diking 51 stormwater drain 51 sewage discharges 51 aquatic ecosystem 51 effluent 51 headwater 51 didymo 50 estuaries 50 contaminated soil 50 gravel extraction 50 marine sediments 50 polluted runoff 50 Catchment 50 reservoir 50 detention basins 50 aquatic habitat 50 sewage lagoon 50 seagrasses 50 basin 50 Severn Estuary 50 retention basins 50 waterbody 50 stormwater 50 ponding 50 aquatic vegetation 50 hydrogeological 50 Athabasca River 50 eel grass 50 watersheds 50 soil erosion 49 polluted groundwater 49 vegetation 49 dissolved oxygen levels 49 drainage basins 49 reef 49 toxic waste 49 tailings 49 flood plains 49 flood plain 49 contaminated soils 49 mine tailings 49 freshwater mussels 49 lagoons