Invasive Species on the Move in the Northeast

Scroll down for maps and links showing how aquatic invasive species (AIS) are spreading throughout the Northeast. View fact sheets and videos to learn more about these challenging species. More information on AIS can be found in the Aquatic Plant & Animal Resources page.

 

Invasive Aquatic Plants

Maps

Click on map to see the latest discoveries of invasive plants in NH waterbodies. 

Click on map to see the latest discoveries of invasive plants in NH waterbodies. 

Fact Sheets

USGS ANIMATED MAPS

Click on species name to see how it has spread over time.

Eurasian Milfoil (Myriophyllum spicatum)

Hydrilla (Hydrilla verticillata)

Water chestnut (Trapa natans)

Videos

Water chestnut

Eurasian Milfoil

Variable Milfoil - NH Chronicle

Variable Milfoil - NH Chronicle

Hydrilla

Variable milfoil


 

Invasive Aquatic Animals

Maps

USGS Animated Maps

Click on species name to see how it has spread over time.

Asian Clam (Corbicula fluminea)

Chinese Mystery Snail (Cipangopaludina chinensis malleata)

Quagga Mussel (Dreissena rostriformis bugensis)

New Zealand Mud Snail (Potamopyrgus antipodarum)

Rusty Crayfish (Orconectes rusticus)

Spiny Water Flea (Bythotrephes longimanus)

Zebra Mussel (Dreissena polymorpha)

 

Videos

Quagga mussels

Zebra mussel (Dreissena polymorpha)

Asian Clam is causing some big concern in Owasco Lake, NY.

Spiny water flea

New Zealand mudsnails