This table shows the 11 invasive aquatic plant species considered threats to Maine�s inland waters. The most recent surveys indicate that none have been found in Long Pond, although the presence of
variable-leaf watermilfoil has been confirmed in Messalonskee lake. This finding suggests that a local threat exists and warrants some cause for concern. The lake and, more specifically, the boat ramp in the
 South Basin of Long Pond should continue to be monitored in order to prevent the introduction of these unwanted species.