Related by context. Frequent words. (Click for all words.) 59 sedimentation 58 ponding 57 seepage 56 shoaling 55 shoreline erosion 55 sediment 54 groundwater pumping 54 saturated soils 54 diking 53 polluted groundwater 53 saltwater intrusion 53 unnamed tributary 53 Didymo 53 silting 53 streambeds 53 algal bloom 52 silt 52 winterkill 52 discoloration 52 discolouration 52 streambed 52 soil erosion 52 nutrient runoff 52 detention basins 52 soil compaction 51 polluted runoff 51 beaver dams 51 aquatic habitat 51 subsidence 51 dissolved oxygen levels 51 oxygen depletion 51 groundwater recharge 50 Sediment 50 drainage 50 snow melt 50 cofferdam 50 aquatic vegetation 50 revetment 50 siltation 50 groundwater contamination 49 lakebed 49 coffer dam 49 sewer overflows 49 freeze thaw 49 culverts 49 sewage overflow 49 snowmelt 49 headwater 49 algae blooms 49 silty 48 Melting snow 48 crusting 48 landslips 48 contaminated sediments 48 floodplain 48 salinity 48 groundwater 48 arsenic contamination 48 sinkholes 48 sewage overflows 48 Creek tributary 48 puddling 48 mine subsidence 47 sewage discharges 47 Middle Fork 47 stormwater runoff 47 dieback 47 algal blooms 47 acidification 47 overland flooding 47 rainwater runoff 47 watercourse 47 corrosion 47 revegetation 47 denitrification 47 zebra mussels 47 roadbed 47 retaining walls 47 overgrazing 47 retention basins 46 weirs 46 turbidity 46 leachate 46 eelgrass 46 spawning habitat 46 toxic algae 46 riprap 46 stormwater drainage 46 vegetation 46 didymo 46 root rot 46 sandbars 46 beaver dam 46 coulee 46 milfoil 46 backflow 46 rip rap 46 discolored 46 wetlands 46 erosion 46 desiccation