Quebec's Lake Memphremagog, which extends down into north-central Vermont, is said to be home to a lake monster, Memphre, with reports supposedly dating as far back as 1816.
In British Columbia's Lake Okanagan, there supposedly exists the Ogopogo monster. It is said to be dark, up to 70 feet long, and have a series of humps. It is the world's second most famous creature after Nessie, and like many lake monsters, native Indians are said to have described the beast in their legends and myths.
America has its share of reputed aquatic beasts as well, including Lake Tahoe‘s Tessie. But the best known lives in Lake Champlain, which forms the border between Vermont and New York. "Champ," as the creature is called, has allegedly been seen by hundreds of witnesses and is anywhere between 10 and 187 feet long, has one or more humps, and is gray, black, dark green, or other colors.
The small town of Port Henry, New York, is the self-proclaimed "Home of Champ" and has a large wooden board that records monster sightings. The best evidence for Champ - in fact, for any lake monster - was a 1977 photo taken by Sandra Mansi showing what appeared to be a dark head and hump in the lake. Later investigation showed that the object was almost certainly a floating log that looked serpentine from a certain angle.