This summer a large American Eel was spotted in Kennebec Lake by Jill Mark. She reported: "there is a very large American eel in this lake. I saw it around 7:30 this am along the south bank feeding. I am located where the trailers are close to the west end of Kennebec. This eel was a good 5 feet with a large head."
I have attached an article about the American Eel in Kennebec Lake by Dr. Gray Merriam.