​Montgomery County

Seneca Creek State Park
11950 Clopper Road
Gaithersburg, MD 20878


Driving Directions:

From Washington, D.C, Virginia and points south, take I-270 north towards Frederick, Maryland. Take Exit 10, Clopper Road (Route 117). Turn right at the light at the bottom of the ramp. The park is approximately 2 miles on the left.

From points north, take I-270 south towards Washington, D.C., take Exit 11 (MD Route 124 west). Turn right at the light at the bottom of the ramp. At the second light, turn right onto Clopper Road (Route 117). The park is approximately 1.5 miles on the left.

Hours of Operation:

8 a.m. to Sunset, March-October

10 a.m. to Sunset, November-February

Pet Policy:

Pets are allowed in Seneca Creek State Park.

Hunting Policy:

  • General hunting permitted in 1,000 acre designated hunting area
  • Archery-only hunting for deer permitted in 2,000 acre designated hunting area
  • Managed shotgun deer hunting program in the Clopper area - lottery system to select hunters - Managed Hunt Permit required to participate in the hunt (not required to participate in the lottery)
  • Shotgun-only hunting for deer permitted in the Schaeffer Farm area - Managed Hunt Permit / free WHS permit / reservation required

Seneca Creek State Park


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 creek. About mid-May through June, the Schwartz peony gardens and field plants are in bloom.

Service Charges

There are service charges to enter the Day Use Area of Seneca Creek State Park on weekends and holidays from April through October.

The cost is $3 per person for Maryland residents and $5 per person for out-of-state residents. Children in car seats and booster seats are free. Veterans and active duty military members with ID will not be charged.

Please note that the contact station accepts cash or check only.


Hiking and biking trails, playgrounds, boating and boat rental, fishing, flatwater canoeing and kayaking, orienteering, picnicking, historic sites, and hunting (in designated areas and seasons).


Heron at Seneca Creek State Park


Boat Center & Self Launch Boating

Disc Golf Course


Public Picnic Groves

Rental Picnic Areas and Pavilions

Historic Features

Historic Sites


Hunting at Seneca Creek State Park, Patuxent River State Park and Monocacy NRMA

Pet Policy

  • Pets are allowed.
  • Pets much be leashed. Pets may be off-leash and under voice control while swimming, but must be leashed again when they return to land.
  • Pet owners must clean up after their pet. Waste disposal containers are available in several areas of throughout the park.
  • Pets, with the exception of service animals, are not allowed in park buildings, playgrounds, or in the Clopper Lake Boat Center. Pets are not permitted on rental boats.


Seneca Creek State Park offers an accessible park office, six accessible picnic pavilions, and many accessible family picnic sites. Three picnic sites have been designed specifically for wheelchair access. Seven of 11 restrooms in the park are accessible via paved walkways. The Boat Center has a paved lakefront walkway for fishing access.

Seneca Creek does not at present have paved hiking or biking trails; all trails are earth surface and may include roots, steep slopes, or steps.

For additional accessible amenities in Maryland State Forests and Parks, visit the Accessibility For All section of this website.


Online Services

Contact the Park Service

  • To Report Violations of Park Rules: 1-800-825-7275 (Park Watch) or 1-410-260-8888 (Communications Center)
  • General Information: 1-800-830-3974 (Annapolis Office)
  • Reservations: 1-888-432-2267
  • Email Us
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