|"Is this all real? Or has this been happening inside my head?"
The topic of this article is of a real-life subject that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.
Lake Windermere was the largest natural lake in England.
In 1997, Rita Skeeter told Betty Braithwaite in an interview that she recalled interviewing Elphias Doge a few years back about Merpeople's rights. She commented that he seemed "completely gaga" as he seemed to think they were sitting on the bottom of Lake Windermere and kept telling her to watch out for trout.
- Harry Potter and the Deathly Hallows (Mentioned only)