Name [ 2] County Area [ 1] Estab- River / lake / other Image Remarks acres ha Assateague State Park Worcester 855 acres 346 ha 1956 Atlantic Ocean Barrier island with swimming, beachcombing, sunbathing, surfing and fishing Big Run State Park Garrett 300 acres 120 ha Savage River Reservoir Camping, fishing, flat water canoeing, hiking trails, picnicking Bill Burton Fishing Pier State Park Dorchester , Talbot 24 acres 9.7 ha 1987 Choptank River Fishing, hiking, cycling Bohemia River State Park Cecil 466 acres 189 ha 2022 Great Bohemia Creek Hiking, biking, canoeing, kayaking, wildlife viewing, fishing Calvert Cliffs State Park Calvert 1,311 acres 531 ha 1960s Chesapeake Bay Fossil hunting, hiking trails, fishing, hunting, picnicking, youth group camping, playground, shelters Casselman River Bridge State Park Garrett 4 acres 1.6 ha 1957 Casselman River Historic bridge; popular fishing location Chapel Point State Park Charles 821 acres 332 ha 1972 Port Tobacco River Largely undeveloped; features fishing and hunting Chapman State Park Charles 829 acres 335 ha 1998 Potomac River Home of Mount Aventine ; fishing, hunting, hiking trails Cunningham Falls State Park Frederick 6,157 acres 2,492 ha 1954 Big Hunting Creek Includes the Catoctin Furnace ; features boating, fishing, swimming, playground, trails, hunting, and picnicking Cypress Branch State Park Kent 314 acres 127 ha 2022 Includes a picnic area near a 3-acre fishing pond Dans Mountain State Park Allegany 482 acres 195 ha 1970s Olympic-sized swimming pool with waterslide and refreshment stand; fishing, hiking, picnic areas, playground, pavilions Deep Creek Lake State Park Garrett 1,169 acres 473 ha 2000 Deep Creek Lake Boating and fishing on Maryland's largest man-made lake, camping, hunting, hiking trails Elk Neck State Park Cecil 2,369 acres 959 ha 1936 Chesapeake Bay Home of Turkey Point Light ; beach, picnicking, seasonal convenience store, camping, cabins, nature center, trails for hiking and biking, hunting, various water sports Fort Frederick State Park Washington 722 acres 292 ha 1922 Potomac River , Stone fortification built by colonial Province of Maryland from the French and Indian War (1754-1763); visitors center, picnicking, boating, fishing, hiking, camping Fort Tonoloway State Park Washington 26 acres 11 ha Undeveloped Franklin Point State Park Anne Arundel 484 acres 196 ha 1999 Chesapeake Bay Undeveloped Gambrill State Park Frederick 1,209 acres 489 ha 1934 Picnicking, hiking, mountain biking, horseback riding, fishing pond, camping Gathland State Park Frederick , Washington 144 acres 58 ha 1949 Former estate of George Alfred Townsend ; museum, visitors center, picnicking, hiking on the Appalachian Trail Greenbrier State Park Frederick , Washington 1,408 acres 570 ha 1964 Greenbrier Lake Swimming, fishing, boating, boat rental, camping, camp store, hiking, picnicking, playground, Appalachian Trail Greenwell State Park St. Mary's 596 acres 241 ha 1971 Patuxent River Historic Rosedale Manor House; picnicking, swimming, non-motorized boating, hiking, equestrian and cycling trails, fishing, hunting Gunpowder Falls State Park Baltimore , Harford 15,088 acres 6,106 ha 1959 Gunpowder River , Multiple non-contiguous recreational areas: Picnicking, hiking, biking, horseback riding, cross-country skiing, hunting, various water sports Hallowing Point Waterfront Park Calvert 13 acres 5.3 ha 2017 Patuxent River Opening 2022; on Route 231 , on the Calvert County side of the Patuxent River Bridge Harriet Tubman Underground Railroad State Park Dorchester 17 acres 6.9 ha 2007 Dedicated to the life and work of abolitionist and Underground Railroad activist Harriet Tubman ; opened in 2017 Hart-Miller Island State Park Baltimore 244 acres 99 ha 1977 Back River Chesapeake Bay Accessible only by boat; 3,000-foot (910 m) sandy beach Herrington Manor State Park Garrett 365 acres 148 ha 1964 Herrington Creek Swimming, non-motorized boating, picnicking, hiking, tennis, volleyball, cabins Janes Island State Park Somerset 3,160 acres 1,280 ha 1963 Chesapeake Bay Visitors center, conference center, picnicking, cabins, camping, camp store, various water sports Love Point State Park Queen Anne's 76 acres 31 ha 2007 Chesapeake Bay Undeveloped Martinak State Park Caroline 105 acres 42 ha 1961 Choptank River , Fishing, camping, boating, hiking, nature center Matapeake State Park Queen Anne's 21 acres 8.5 ha 2009 Chesapeake Bay Beach; leased by Queen Anne's County Matthew Henson State Park Montgomery 100 acres 40 ha 1989 Greenway for hiking and biking New Germany State Park Garrett 508 acres 206 ha Swimming, fishing, picnicking, boat launch, boat rental, canoeing, camping, cabins, hiking trail, cross-country skiing, nature center Newtowne Neck State Park St. Mary's 794 acres 321 ha 2009 Potomac River Non-motorized boating, hiking, picnicking, fishing North Point State Park Baltimore 1,328 acres 537 ha 1987 Back River ,Patapsco River ,Chesapeake Bay Former site of the Bay Shore Amusement Park; visitors center, swimming, hiking and biking trails, pier and shore fishing, picnicking Palmer State Park Harford 590 acres 240 ha 1965 Deer Creek Undeveloped; hiking, fishing, canoeing Patapsco Valley State Park Anne Arundel , Baltimore , Carroll , Howard 14,296 acres 5,785 ha 1907 Upper Patapsco River Hiking, horseback and mountain bike trails, picnicking, canoeing, fishing, camping, historical touring Patuxent River State Park Howard , Montgomery 6,703 acres 2,713 ha 1963 Patuxent River Hunting, fishing, hiking and horseback riding Pocomoke River State Park Worcester 916 acres 371 ha 1939 Pocomoke River Visitors center, swimming pool, biking and hiking trails, boat launch, boat rental, fishing, flat water canoeing, camping, camp store, picnicking Point Lookout State Park St. Mary's 1,083 acres 438 ha 1963 Chesapeake Bay ,Potomac River American Civil War prisoner-of-war camp museum/Marshland Nature Center, swimming, picnicking, boat launch, boat rental, camping, cabins, camp store, fishing, canoeing, hiking trails, hunting Rocks State Park Harford 1,060 acres 430 ha 1949 Deer Creek Fishing, hiking, picnicking, wading, canoeing and tubing, bow hunting, rock climbing, repelling Rocky Gap State Park Allegany 3,119 acres 1,262 ha 1963 Lake Habeeb Boating, camping, fishing, hiking Rosaryville State Park Prince George's 1,227 acres 497 ha 1976 Mount Airy Mansion; trails for hiking, biking and equestrians Sandy Point State Park Anne Arundel 786 acres 318 ha 1948 Chesapeake Bay Swimming, fishing, crabbing, boating, picnicking, windsurfing Sang Run State Park Garrett 264 acres 107 ha 2017 1800s homestead and store Seneca Creek State Park Montgomery 6,391 acres 2,586 ha 1958 Seneca Creek Black Rock Mill, Seneca Schoolhouse; boating, fishing, picnicking, disc golf Sideling Hill Creek State Park Allegany 514 acres 208 ha 2022 Potomac River Forest land, trails, rare species Smallwood State Park Charles 984 acres 398 ha 1958 Mattawoman Creek "Smallwood's Retreat" historic site; marina, picnicking, camping, nature trails South Mountain State Park Frederick , Washington 7,754 acres 3,138 ha Runs the length of South Mountain ; Appalachian Trail ; contiguous with other national, state and local parks St. Clement's Island State Park St. Mary's 62 acres 25 ha 1962 Potomac River Only accessible by boat; reconstructed lighthouse, memorial to first Marylanders landing March 25, 1634 (Maryland Day ); hiking, picnicking, fishing St. Mary's River State Park St. Mary's 2,643 acres 1,070 ha 1968 St. Mary's Lake Hiking, horseback and biking trails, picnicking, boat launch, canoeing, fishing, hunting Susquehanna State Park Cecil , Harford 2,753 acres 1,114 ha 1958 Susquehanna River ,Chesapeake Bay Rock Run Historical Area; fishing, camping, picnicking, boating, hiking trails Swallow Falls State Park Garrett 257 acres 104 ha 1930s Youghiogheny River Camping, hiking, picnicking, nature programs Tuckahoe State Park Caroline , Queen Anne's 3,994 acres 1,616 ha 1963 Tuckahoe Creek Hiking, biking and equestrian trails, canoeing, picnicking, camping, cabins, hunting, archery Washington Monument State Park Frederick , Washington 191 acres 77 ha 1934 1827 stone monument to first President George Washington by citizens of nearby Boonsboro ; picnicking, hiking on the Appalachian Trail Wills Mountain State Park Allegany 470 acres 190 ha 1998 Undeveloped Wolf Den Run State Park Garrett 2,042 acres 826 ha 2018 Three parcels near Kitzmiller Wye Oak State Park Talbot 29 acres 12 ha 1939 Site of celebrated oak tree lost in 2002; picnicking 
