The park, comprised of 6,300 acres, extends along 14 scenic miles of Seneca Creek, as it winds its way to the Potomac River. The Clopper Day-Use Area contains many scenic areas, including the 90-acre Clopper Lake, surrounded by forests and fields. Picnicking, boat rentals, trails and a tire playground are just some of its recreational opportunities. A restored 19th century cabin and a self-guided path interpret the history of the area. Nearby, the Schaeffer Farm Trail Area offers 12 miles of marked trails for hiking and mountain biking. For the more adventuresome hiker, the 16.5-mile Seneca Creek Greenway Trail follows the entire course of the river. During May, the Schwartz peony gardens and field plants are in bloom.

FEATURESHiking and biking trails, boat rental, fishing, flatwater canoeing and kayaking, historic interest, hunting, picnicking, playgrounds, riding trails, picnic pavilions, a restored 19th century cabin, cross-country skiing and vending refreshments.

Girl fishing by the paddle boats in Clopper LakeBoating & Fishing - A hand launch site is available for the lake. Private watercraft are permitted throughout the season. A boat concession on Clopper Lake rents boats for fishing and recreation from May to September. Fish include: largemouth bass, catfish, bluegill, tiger muskie and crappie. Seneca Creek is stocked with put-and-take trout.Picnicking - Picnic areas with tables, grills, and comfort stations are open daily until sunset. Playgrounds are located near the picnic areas. Picnic pavilions for group picnics are available for rental. Click here for season beginning and ending dates, and shelter service charges.Park Office - A 140-seat auditorium may be rented weekdays for meetings.Trails - Trails for hiking and bicycling wind through a variety of habitat. A detailed trail map is available at the park office. Mountain bikes may be used on some trails.Disc Golf Course - A 32-acre, 18-hole course, for both the amateur and the professional is at the park.Hunting - See below for more detailed information. Statewide wildlife/hunting regulations apply.Pets - are not permitted in Clopper Day Use area.