Chilliwack Lake

Chilliwack Lake is a lake in the upper basin of the Chilliwack River southeast of the city of the same name in the Lower Mainland of British Columbia, Canada. The lake, while entirely within Canada, is located just north of the border between British Columbia and the state of Washington and is both fed and drained by the Chilliwack River, which has its source in the North Cascades of Washington state and Canada, which surround the lake on all sides.

Source: Wikipedia