Supplee Launch

Site Location : Prince George’s County

WSSC MapLink

Coordinates :  SW     39-07-27N     76-53-02W

Address & Directions from a Major Highway :

From Route 95, take Route 198 (Sandy Spring Road) west at Exit 33. Follow Route 198 to Route 29 (Columbia Pike). Go north (right) on Route 29 to Route 216. Turn right onto Route 216 to Sweet Cherry Lane. Turn right onto Sweet Cherry Lane and follow it to the launch site.

Public or Private : Operated by The Washington Suburban Sanitary Commission
Site Access (days & hours) : Launching is permitted while the watershed properties are open. This is generally in mid-March through November 30th. The watershed is open 30-minutes before sunrise to sunset.

WSSC enforces a “No Trespassing” regulation with regard to watercraft near its dams. A buoy line approximately 400 yards from the face of the dam has markings to warn boaters of getting too close.

WSSC also enforces a “No Trespassing” regulation on its shoreline property. This means that boaters may not dock or come onto WSSC property anywhere other than designated boat morring and launching sites.

Special arrangements for use (requirements & contact’s phone number) :
Main line: 301-206-7485
Check conditions at: 301-206-4FUN (4386)
WSSCC Police: (to report illegal activities on the reservoirs): 301-206-8888
Special Interests (museum, fishing pier, swimming pool, etc.) : Triadelphia (Brighton Dam) and Rocky Gorge (T. Howard Duckett Dam) Reservoirs are surrounded by 6,000 acres of wooded property that comprises the WSSC portion of the Patuxent watershed. Both properties store a combined surface area of 1,600 acres of raw water which is used to supply customers in Prince George’s and Montgomery Counties.

WSSC sponsors a recreational program on the watershed which allows visitors to pay a fee for engaging in fishing from portions of the shorelines of reservoirs; fishing and recreation boating on large areas of the reservoirs; mooring of personal boats; hiking and horseback riding on designated trails; picnicking and hunting in specific areas.

Parking: (number of spaces, distance to the water) : More than 10

Fees : A Watershed Use Permit ($6 daily – $70 annual) is required to engage in recreational activity on the watershed. There is free access for handicapped and under 16 and over 64 years of age. An additional $80 is charged to Season Permit Holders (individuals) wishing to moor a boat at a watershed site. Permits can be purchased at the Brighton Dam Information Center daily located at:

2 Brighton Dam Road
Brookville, MD 20833


Or, the Cashier’s Office, located at:
14501 Sweitzer Lane
Laurel, MD 20701


View the full list of permitted activities and watershed regulations here:


Wheel Chair Access : Yes
Toilets : Yes
Picnic tables : Yes
Camping : No



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