Aquatic Invasive Species as of 2018 ‐ Westchester County Waterbody Scientific name Common name Amawalk Reservoir Cyprinus carpio Common carp Amawalk Reservoir Dreissena polymorpha Zebra mussel Bedford Lake Najas minor Brittle naiad Byram Lake Reservoir Myriophyllum spicatum Eurasian watermilfoil Cross River Reservoir Cyprinus carpio Common carp Cross River Reservoir Myriophyllum spicatum Eurasian watermilfoil Cross River Reservoir Orconectes virilis Virile crayfish Croton River Hydrilla verticillata Hydrilla Croton River Myriophyllum spicatum Eurasian watermilfoil Croton River Najas minor Brittle naiad Gory Brook Cyprinus carpio Common carp Grassy Sprain Reservoir Alligator mississippiensis American alligator Hudson River Dreissena polymorpha Zebra mussel Hudson River Trapa natans Water chestnut Hudson River near Haverstraw Carassius auratus Goldfish Hudson River near Haverstraw Orconectes virilis Virile crayfish Hudson River near Haverstraw Scardinius erythrophthalmus Rudd Huguenot Lake Alligator mississippiensis American alligator Katonah Lake Potamogeton crispus Curly leafed pondweed Lake Lincolndale Myriophyllum spicatum Eurasian watermilfoil Lake Lincolndale Najas minor Brittle naiad Lake Oscaleta Myriophyllum spicatum Eurasian watermilfoil Lake Oscaleta Najas minor Brittle naiad Lake Oscaleta Potamogeton crispus Curly leafed pondweed Lake Rippowam Myriophyllum spicatum Eurasian watermilfoil Lake Waccabuc Egeria densa Brazilian elodea Lake Waccabuc Myriophyllum spicatum Eurasian watermilfoil Lake Waccabuc Najas minor Brittle naiad Lake Waccabuc Potamogeton crispus Curly leafed pondweed Lake Waccabuc Trapa natans Water chestnut Lounsbury Lake Trapa natans Water chestnut Mohansic Lake Myriophyllum spicatum Eurasian watermilfoil Mohegan Lake Myriophyllum spicatum Eurasian watermilfoil Mohegan Lake Potamogeton crispus Curly leafed pondweed Mohegan Lake Trapa natans Water chestnut Muscoot Reservoir Alosa pseudoharengus Alewife Muscoot Reservoir Cyprinus carpio Common carp Muscoot Reservoir Hydrilla verticillata Hydrilla Muscoot Reservoir Lepomis cyanellus Green sunfish Muscoot Reservoir Myriophyllum spicatum Eurasian watermilfoil Muscoot Reservoir Orconectes rusticus Rusty crayfish Muscoot Reservoir Potamogeton crispus Curly leafed pondweed Muscoot Reservoir Trapa natans Water chestnut New Croton Reservoir Hydrilla verticillata Hydrilla New Croton Reservoir Myriophyllum spicatum Eurasian watermilfoil Ossining Reservoir Cipangopaludina chinensis Chinese mystery snail Ossining Reservoir Najas minor Brittle naiad Ossining Reservoir Trapa natans Water chestnut Peach Lake Myriophyllum spicatum Eurasian watermilfoil Pelham Lake Trapa natans Water chestnut Pine Lake Trapa natans Water chestnut Pocantico Lake Myriophyllum spicatum Eurasian watermilfoil Pocantico Lake Najas minor Brittle naiad Saw Mill River near Ardsley Cyprinus carpio Common carp Sparkle Lake Cipangopaludina spp (species unknown) Sparkle Lake Myriophyllum spicatum Eurasian watermilfoil Swan Lake Carassius auratus Goldfish Tarrytown Reservoir Myriophyllum spicatum Eurasian watermilfoil Teatown Lake Marsilea quadrifolia European four leaf clover Teatown Lake Myriophyllum spicatum Eurasian watermilfoil Teatown Lake Trapa natans Water chestnut Titicus Reservoir Myriophyllum spicatum Eurasian watermilfoil Titicus Reservoir Orconectes rusticus Rusty crayfish Troublesome Brook n of Tuckahoe Corbicula fluminea Asian clam Truesdale Lake Potamogeton crispus Curly leafed pondweed Unnamed Pond Najas minor Brittle naiad Unnamed Pond Trapa natans Water chestnut Unnamed Pond‐ Teatown Cipangopaludina chinensis Chinese mystery snail Vernay Lake Potamogeton crispus Curly leafed pondweed Wallace Pond Potamogeton crispus Curly leafed pondweed Wampus Lake Myriophyllum spicatum Eurasian watermilfoil Wampus Lake Potamogeton crispus Curly leafed pondweed West Branch Croton River Cyprinus carpio Common carp Whatmores Lake Potamogeton crispus Curly leafed pondweed