Name Image County Size Estab- [ 1] Lake / river Remarks acres ha Ackley Lake State Park Judith Basin 290 120 1940 Ackley Lake Anaconda Smelter Stack State Park Deer Lodge 12 4.9 1986 none The park cannot actually be accessed, but only viewed from a distance. Bannack State Park Beaverhead 1,529 619 1954 Grasshopper Creek The well-preserved ghost town of a one-time territorial capital. Beaverhead Rock State Park Madison 71 29 1975 Beaverhead River Beavertail Hill State Park Missoula 65 26 1968 Clark Fork Big Arm State Park Lake 217 88 1966 Flathead Lake Unit of Flathead Lake State Park Black Sandy State Park Lewis and Clark 43 17 1980 Hauser Reservoir Brush Lake State Park Sheridan 450 180 2004 Brush Lake There are no fish in this lake due to the mineral makeup of the water. Chief Plenty Coups State Park Big Horn 195 79 1961 Pryor Creek Clark's Lookout State Park Beaverhead 7 2.8 1985 Beaverhead River Cooney State Park Carbon 309 125 1970 Cooney Reservoir Council Grove State Park Missoula 187 76 1978 Clark Fork River Elkhorn State Park Jefferson 1 0.40 1980 none Finley Point State Park Lake 28 11 1965 Flathead Lake Unit of Flathead Lake State Park First Peoples Buffalo Jump State Park Cascade 1,481 599 1972 none Formerly Ulm Pishkun State Park Fish Creek State Park Mineral 6,200 2,500 2010 Fish Creek Fort Owen State Park Ravalli 2 0.81 1956 Mill Creek Frenchtown Pond State Park Missoula 41 17 1972 Frenchtown Pond Giant Springs State Park Cascade 675 273 1972 Missouri River and Roe River Granite Ghost Town State Park Granite 1 0.40 1975 none Abandoned 1890s silver boomtown. Greycliff Prairie Dog Town State Park Sweet Grass 98 40 1974 none Hell Creek State Park Garfield 337 136 1966 Fort Peck Lake Lake Elmo State Park Yellowstone 183 74 1983 Lake Elmo Lake Mary Ronan State Park Lake 120 49 1967 Flathead Lake Les Mason State Park Flathead 8 3.2 1983 Whitefish Lake Lewis and Clark Caverns State Park Jefferson 2,920 1,180 1935 none Logan State Park Lincoln 18 7.3 1967 Middle Thompson Lake Lone Pine State Park Flathead 251 102 1941 none Lost Creek State Park Deer Lodge 502 203 1957 Lost Creek Milltown State Park Missoula 635 257 2012 Clark Fork and Blackfoot rivers Madison Buffalo Jump State Park Gallatin 638 258 1966 none Makoshika State Park Dawson 11,634 4,708 1953 none Marias River State Park Toole 2,011 814 2009 [ 2] Marias River Medicine Rocks State Park Carter 330 130 1957 none Missouri Headwaters State Park Gallatin 532 215 1947 Jefferson , Madison , and Gallatin rivers North Shore State Park Flathead 160 65 n/a Flathead Lake Painted Rocks State Park Ravalli 23 9.3 1963 Painted Rocks Reservoir, Bitterroot River Pictograph Cave State Park Yellowstone 93 38 1969 none Pirogue Island State Park Custer 210 85 1982 Yellowstone River Placid Lake State Park Powell 31 13 1977 Placid Lake Rosebud Battlefield State Park Big Horn 3,052 1,235 1978 none Salmon Lake State Park Missoula 42 17 1977 Salmon Lake, Clearwater River Sluice Boxes State Park Cascade 1,451 587 1974 Belt Creek Smith River State Park Meagher 1 0.40 1960 Smith River 59-mile (95 km) segment of the river with only one public put-in and one public take-out for the entire stretch. Somers Beach State Park Flathead 106 43 2021 Flathead Lake Spring Meadow Lake State Park Lewis and Clark 61 25 1981 Spring Meadow Lake Thompson Falls State Park Sanders 36 15 1960 Clark Fork , Noxon Rapids Reservoir Tongue River Reservoir State Park Big Horn 642 260 1983 Tongue River Reservoir Tower Rock State Park Cascade 140 57 2004 Near Missouri River Travelers' Rest State Park Missoula 41 17 2001 Lolo Creek Wayfarers State Park Lake 67 27 1969 Flathead Lake Unit of Flathead Lake State Park West Shore State Park Lake 129 52 1955 Flathead Lake Unit of Flathead Lake State Park Whitefish Lake State Park Flathead 10 4.0 1960 Whitefish Lake Wild Horse Island State Park Lake 2,164 876 1977 Flathead Lake Unit of Flathead Lake State Park Yellow Bay State Park Lake 15 6.1 1941 Flathead Lake , Yellow Bay Creek Unit of Flathead Lake State Park 
