Mary Lake Boat Ramp provides public access to this 154-acre lake in Langlade County via an unimproved public boat landing at the end of Forest Road 2357, with an additional for-fee launch option managed by the Mary Lake Protection and Rehabilitation District accessible from Mary Lake Lane.

The lake is designated as a NO-WAKE lake year-round due to its shallow nature (maximum depth of 10-20 feet), making it ideal for calm-water paddling and fishing.