Located along the Susquehanna River valley with its heavy forest cover and massive rock outcroppings, Susquehanna State Park offers a wide variety of outdoor recreational opportunities as well as historical significance. The park is home to some of the most popular mountain biking trails in Maryland and the river itself beacons fishermen and boaters alike. Susquehanna State Park also contains a very family friendly campground with traditional campsites and cabins. History buffs will be drawn to the restored Rock Run Historical Area with its working grist mill, the Archer Mansion, Jersey Toll House and the remains of the Susquehanna Tidewater Canal.

Beginning as an overflow of Otsego Lake, near Cooperstown, New York, the Susquehanna River travels south 444 miles before emptying into the Chesapeake Bay in Maryland at a rate of 19 million gallons of water every minute. In an average year, water from the Susquehanna accounts for over half the fresh water flowing into the Chesapeake Bay.	Rock Run Grist Mill, erected in 1794, is a three story stone structure and is fully operational. Inside are displays of 19th century farm and mill equipment. The water powered mill is operated during the summer months.	One rooom inside the mill.
Abundant with spring wildflowers including arrowhead, pussy toes, mayapple, trout lilies, Virginia bluebells, and trillium species. Numerous ferns and several endangered plant species live in this habitat.	With a 13million-acre drainage basin, the watershed of the Susquehanna River is the second largest in the eastern United States, encompassing over half the state of Pennsylvania as well as parts of Maryland and New York . While the river is broad, it is not deep -- it is the longest non-commercially navigable river in the country.	Wooded ridges and valleys flank the wide Susquehanna River. Trails visit hardwood forests and rolling agricultural fields with opportunities to observe herds of white-tailed deer, wild turkeys and other wildlife.