Related by context. Frequent words. (Click for all words.) 43 waterway 42 Chicago Sanitary 41 rotenone 41 contaminated sediments 41 Tittabawassee River 40 Ship Canal 39 inland lakes 39 Zebra mussels 39 Raw sewage 39 Rainbow trout 39 waterways 39 Asian Carp 39 Lake Huron 38 Asian carp 38 invasive species 38 Chronic Wasting Disease 38 Great Lakes basin 38 Des Plaines River 38 emerald ash borer 38 untreated wastewater 38 muskellunge 38 toxic algae 38 lakes 38 northern pike 38 aquatic invasive species 37 invasive weed 37 invasive aquatic 37 spillway 37 Lake Pepin 37 steelhead trout 37 yellow perch 37 lake sturgeon 37 Talmadge Creek 36 gizzard shad 36 contaminated sediment 36 Great Lakes Compact 36 purple loosestrife 36 quagga mussel 36 ash borer 36 Mississippi River 36 hydrilla 35 Welland Canal 35 watercourse 35 Emerald Ash Borer 35 bighead carp 35 brown trout 35 aquatic vegetation 35 Caloosahatchee River 35 zebra mussel 35 rainbow trout 35 zebra mussels 34 E. coli 34 Great Lakes 34 earthen levee 34 Melting snow 34 contaminants 34 didymo 34 gill nets 34 Asian citrus psyllid 34 spread 34 Flood waters 34 bluegills 34 feral swine 33 phragmites 33 Lake Winnebago 33 Mackinaw 33 Souris River 33 sluice gate 33 smallmouth bass 33 River tributary 33 carp 33 sauger 33 walleye 33 inland waters 33 Lake Superior 33 mussels 33 radioactive steam 32 milfoil 32 silver carp 32 brook trout 32 Asian longhorned beetle 32 chronic wasting 32 algae 32 CWD 32 muskie 32 Japanese knotweed 32 ash trees 32 Assiniboine River 32 flathead catfish 32 invasive pest 32 snakehead 32 Invasive species 32 cofferdam 32 invasives 32 bovine tuberculosis 32 trout 31 PCBs 31 bullheads 31 Oak Ridges Moraine 31 Bluegills 31 brookies