Related by context. Frequent words. (Click for all words.) 49 lagoons 49 rivers lakes 48 Raw sewage 47 rivers 47 creeks 46 waterways 46 treated effluent 45 Effluent 45 reed beds 45 estuary 45 sewage discharges 45 estuaries 44 ponds 44 headwaters 44 outfalls 44 freshwater 44 effluents 43 Lake Allatoona 43 saltwater 43 tributary 43 Creek tributary 43 greywater 43 river 43 discharges 43 effluent 43 raw sewage 43 aquatic habitat 43 swamp 43 algal bloom 43 wastewater 43 sewage 42 aquatic weeds 42 Polluted 42 creek 42 polluted rivers 42 swamps 42 lakes 42 river basin 42 freshwater mussels 42 dissolved solids 42 streambeds 42 mangrove swamps 42 mine tailings 42 brackish 42 mosquito infested 42 turbid 41 headwater 41 ponds lakes 41 lakes rivers 41 bottomland 41 aquatic ecosystem 41 rivers creeks 41 dammed 41 sediment runoff 41 untreated wastewater 41 lagoon 41 tailwaters 41 lake 41 babbling brook 40 Swamps 40 contaminated groundwater 40 sumps 40 impoundments 40 watercourse 40 tributaries 40 polluted 40 toxic waste 40 water 40 trout streams 40 bilge 40 lakes ponds 40 intertidal 40 Sewage 40 anoxic 40 outfall 40 giardia 39 drainages 39 freshwater lakes 39 stormwater runoff 39 tailwater 39 Willapa Bay 39 swampy 39 brackish water 39 billabong 39 inlet 39 polluted waterways 39 industrial effluents 39 estuarine 39 graywater 39 sedimentation 39 groundwater 39 flumes 39 waterbodies 39 sediment 39 polluted groundwater 39 untreated sewage 38 trout fishery 38 polluted runoff 38 dewatered 38 turbidity 38 catchments