Related by context. Frequent words. (Click for all words.) 49 mainstem 49 ice jams 49 detention basins 48 watercourse 47 snow melt 47 drainage 47 shoaling 47 sediment 47 sedimentation 46 weir 46 silting 46 basin 46 diking 46 weirs 46 tributaries 46 groundwater recharge 46 water 45 siltation 45 aquatic habitat 44 silt 44 rivers 44 retention basins 44 salinity 44 streamflow 44 snowmelt 44 backflow 43 turbidity 43 spawning habitat 43 river 43 shoreline erosion 43 outfalls 43 lake 43 dams 43 canals 43 wetlands 43 culverts 43 tailwater 43 lakes 43 streamflows 43 soil erosion 43 freshwater 42 headwater 42 reservoirs 42 rainwater runoff 42 spillway 42 Spillway 42 groundwater basin 42 moisture 42 saltwater intrusion 42 dam 42 drainage basins 42 watercourses 42 coffer dam 42 rainwater 42 canal 42 aquifer 42 Sediment 41 watersheds 41 depressions 41 groundwater pumping 41 Drainage 41 wetland habitat 41 rainfall 41 aquatic ecosystem 41 Dam 41 seepage 41 sediment runoff 41 creek 41 stormwater drainage 41 flooding 41 floodplain 41 dissolved oxygen levels 41 puddling 41 floodway 41 drainage basin 41 polluted runoff 41 heavy rainfall 41 flume 41 roadbed 40 groundwater 40 ponding 40 storm drains 40 heavy rainstorms 40 spillways 40 hydrological 40 precipitation 40 beaver dams 40 drainages 40 wetland 40 coulee 40 Evaporation 40 Angat Dam 40 floodplains 40 estuaries 40 nutrient runoff 40 Souris River 40 estuary 40 dike 40 waterbody 40 aquifers 40 streambeds