The park offers fishing, boating, camping, and trails for hiking and equestrian use.

[3] The park saw its genesis in 1958 when the former president of the Baltimore Museum of Art, J. Gilman D’Arcy Paul, offered to donate 300 acres to the state.

[5] The park's Rock Run Historical Area includes: the Rock Run Grist Mill; the 1804 Carter-Archer Mansion, which was once the home of mill owner John Archer; remnants of the Susquehanna and Tidewater Canal; and the restored Jersey Toll House, where fees were collected for the historic Port Deposit Bridge.

[4] The privately run Steppingstone Museum, which preserves and demonstrates Harford County's rural arts and crafts of the 1880-1920 period, is also located on the park grounds.

The park also offers boating and fishing on the Susquehanna, campgrounds, and picnicking facilities.