Knocking on our Door

Lake George currently has six known AIS: Eurasian watermilfoil,
curly-leaf pondweed, zebra mussels, Asian clam, Chinese mystery snail, and spiny water flea.

There are many more AIS and non-native species that have already invaded other lakes close by, such as alewife and hydrilla to name a few. Connected waterways allow invasives to spread unchecked.  The nearby Hudson River, Great Lakes, St. Lawrence River, and even Lake Champlain have very high numbers of AIS and non-native species due to their unnatural hydrologic connections as shown in the graphic above (courtesy LCBP). Boats travel between these waterbodies and Lake George, as well as between other waterbodies as well, creating pathways for AIS to spread.


Hydrilla verticillata was found in the outlet of Cayuga Lake in August 2011, and in September 2012 it was announced to be in the Erie Canal near Buffalo.

This aggressive waterweed can grow up to 1 foot per day, forming dense mats choking out waterways up to 25 ft deep. It looks very similar to our native waterweed, called Elodea. for more details on Hydrilla, click here.

We do not want Hydrilla to make its way to Lake George!