Mary Lake Access provides public boat launch facilities for the 154-acre lake in Langlade County, with an unimproved public landing at the end of Forest Road 2357 and an additional fee-based launch 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 suitable for calm-water paddling and fishing activities.