Facilities at Lake Mary Ronan State Park include 27 camping sites (no hookups) and a boat ramp. The camping fee is $11 during recreation season and $9 off season. Maximum length of stay is 14 days in a 30 day period. Day use is $4 per vehicle.
The park is located off Highway 93 at Dayton on the west side of Flathead Lake, then 7 miles northwest.