Maryland

Maryland

Susquehanna State Park

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Established
1960
Acreage
2,753 · 2,753 acres along the lower Susquehanna River; began 1958 with J. Gilman D'Arcy Paul's 300-ac donation offer; state began purchasing land 1960
Location
Harford County, MD (north of Havre de Grace, on the lower Susquehanna)
Key features
Rock Run Historical Area: Rock Run Grist Mill (1794), 1804 Carter-Archer Mansion, Jersey Toll House; remnants of the Susquehanna & Tidewater Canal; Lower Susquehanna River; Steppingstone Farm Museum
Activities
Hiking, mountain biking (15+ mi of multi-use trails), camping, fishing, boating, picnicking, history tours of mill and mansion
Notable
The 1794 Rock Run Grist Mill inside the park is one of the oldest standing grist mills in Maryland; on the National Register of Historic Places along with the Carter-Archer Mansion (1804)

Visits

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Source: dnr.maryland.gov · 2026-05-14