Lake George Watershed Lake Steward Program End of Season ...

DRAFT
Map showing previously visited waterbodies in New
York State before launching at Lake George
This map shows the 56 waterbodies in New York that boats had visited before arriving at a
launch at Lake George (excluding Lake George itself). Lines that are red indicate lakes that
are known to be infected with one or more invasive species. Lines that are black go to lakes
that are not known to be infected or are unknown. Some ‘uninfected’ lakes might already
have invasive species in them, and we just haven’t found them or recorded them yet. 15 out
of the 56 lakes are not known to have invasive species in them or it could not be determined
due to inability to pinpoint the correct body of water (map is shown enlarged on next page).
Invasive species found in waterbodies that boats had previously been in include: swollen
bladderwort, European frogbit, yellow floating heart, variable watermilfoil, Eurasian
watermilfoil, alewife, zebra mussels, water chestnut, curly-leafed pondweed, spiny water
flea, brittle naiad, starry stonewort, and many others. The Hudson River, Lake Champlain,
and St. Lawrence have more invasive species then other bodies of water by far, at 91,
48, and 87 respectively. After that, most lakes do not have more then 2 invasive species.
However, some do. For instance, 2 boats had previously been in Oneida Lake, which has
Eurasian watermilfoil, curly-leaf pondweed, starry stonewort, and spiny water flea. Of the 41
waterbodies with invasive species, only 4 do not have Eurasian watermilfoil. Cranberry Lake
has variable watermilfoil, the Oswego River has water chestnut, Sacandaga Lake has the
spiny water flea, and Tupper Lake has variable milfoil. Based on these findingd, it appears
that Eurasian watermilfoil is the most prevalent invasive species in waterbodies in New York
State and also maybe commonly the first invasive species discovered in lakes as well.
12 Lake George Watershed Lake Steward Program End of Season Report 2008