WSSC Extends Winter Trail Pilot Program at Triadelphia Reservoir for 2017 Season

Equestrian enthusiasts and hikers will continue to enjoy the trail year-round

WSSC is extending its Winter Trail Pilot Program allowing the Triadelphia Access Road along the Triadelphia Reservoir to remain open for multipurpose use during the 2017 winter months. Horseback riders, birdwatchers, and hikers will be able to enjoy use of the Access Road through the winter.

The Pilot Program opens the 4.5 mile Triadelphia Access Road that traces the southern boundary of the reservoir in Montgomery County as a year-round multi-use trail. The blue stone parking lot, located on Triadelphia Lake Road, will be the only entrance to the Access Road during the winter. This lot provides ample parking space for six to eight horse trailers. The Pilot Program applies to land activities on the Access Road only. All other areas of the reservoir are close for the season.

WSSC will enforce its same watershed use regulations on the Access Road.

  • Anyone 16 years or older must possess a valid WSSC Watershed Use Permit.
  • Minors under the age of 16 must be accompanied by someone 18 years of age and hold a valid WSSC Watershed Use Permit.
  • All horseback riders must wear a helmet.
  • No animal waste can be left on parking lots or roadways.
  • Season and day permits are valid for use of the Access Road.
    • 2017 season permits are required starting January 2, 2017
  • Season and day permits can be purchased online or in person at:
    • Richard G. Hocevar Building Cashier’s Window
    • Brighton Dam Visitor’s Information Cabin
  • 2017 season permits can be purchased beginning January 2, 2017.

Horseback riding, bird watching, and hiking are allowed on the Access Road only. The creation or use of side trails will not be permitted. Riders, bird watchers, and hikers will need to strictly adhere to the “Stay on Trail” signs visibly posted along the Access Road.

The trail will be closed to horseback riding in wet weather and when the trail is wet and muddy to protect the watershed from erosion. You can find out the daily status of trails by checking WSSC’s website at, our watershed recreation Facebook page at or by calling the “4Fun” hotline at 301-206-4386. Access Road trail maps and complete rules and regulations are available online under the Education and Recreation section of our site.

The Access Road will be open daily from sunrise to sunset.

The program will be re-evaluated based on environmental impact, visitors usage on the Access Road and the Triadelphia Reservoir prior to the 2017 open season.