Related by context. Frequent words. (Click for all words.) 60 invasive aquatic 59 milfoil 56 aquatic vegetation 56 phragmites 55 invasive weeds 54 hydrilla 53 stormwater pollution 53 invasive weed 52 aquatic invasive species 52 invasive species 51 noxious weeds 50 purple loosestrife 50 zebra mussels 50 Inland Bays 50 weeds 49 eelgrass 49 invasives 49 Zebra mussels 49 sedimentation 49 nutrient pollution 48 polluted runoff 48 stormwater runoff 48 Japanese knotweed 48 rotenone 47 knotweed 47 garlic mustard 47 siltation 47 soil erosion 46 water hyacinth 46 Invasive species 46 noxious weed 46 phosphorus 46 aquatic ecosystems 46 invasive alien 45 toxic algae 45 mosquito larvae 45 woody debris 45 gypsy moths 44 aquatic habitat 44 duckweed 44 dissolved oxygen levels 44 zebra mussel 44 wetlands 44 toxins 44 ponds 44 mussels 44 aquatic species 43 algae 43 aquatic organisms 43 beaver dams 43 freshwater 43 pollution 43 knapweed 43 herbicides 43 algae blooms 43 weevils 43 didymo 43 overgrowth 43 phosphorous 43 dissolved oxygen 43 cattail 43 rainwater runoff 43 waterbodies 43 waterways 43 sea lamprey 42 algal blooms 42 contaminants 42 toxic chemicals 42 aquatic insects 42 contaminant 42 soil compaction 42 nutrient 42 sediment 42 pesticide 42 hyacinth 42 vegetation 42 PCB contamination 42 buckthorn 42 salt cedar 42 pollutants 42 beetle infestation 42 bacterial 42 chloramine 42 wastewater discharge 42 Herbicides 42 pesticides 42 harmful toxins 42 blackberry bushes 42 grass carp 41 lakes 41 alewife 41 algal bloom 41 alga 41 septage 41 impervious surfaces 41 liquid manure 41 stormwater 41 sewage overflow 41 bacteria 41 silt 41 ballast water