Seneca Creek State Park

Earlier thi​s year Clopper Lake experienced a boating closure due to a cyanobacteria bloom. The lake is currently testing within safe levels for recreational use, and the lake has reopened to private recreational boating.

Visitors to Clopper Lake should limit direct contact between lake water and open wounds and avoid ingesting lake water. Fish caught in the lake must be cleaned thoroughly and all entrails discarded.​ We also recommend that pets be kept away from lake water at all times.

The Maryland Department of Natural Resources will continue to monitor conditions in the lake. If visitors or their pets experience any symptoms of illness after being near the water, a doctor or veterinarian should be consulted. For more information please call the Maryland Department of Health Helpline at 1-866-703-3266.

SERVICE ADVISORY​:​ T​he Clopper Lake Boat Center is currently closed. We expect to open for boat rentals in mid-July 2023. We apologize for the late opening.

Boat Center

Boat Center at Seneca Creek State Park​​

The Boat Center offers a variety of different vessels for hourly or daily rental on the calm waters of Clopper Lake from May through Labor Day Weekend. Cash, Visa, and Mastercard are accepted at the Boat Center.

Days of Operation: ​​

  • Out last day of boat rentals for 2022 was Labo​r Day.
  • Check back next spring for information regarding the 2023 operating season.
  • ​Self-launch for privately-owned watercraft is still available, please see below for information.

Hours of Operation:

  • ​Check back next spring for information regarding the 2023 hours of operation.

Boat Rental Prices:
*All rentals include paddles/oars and Personal Flotation Devices (PFDs) for everyone on board

  • Canoes and Rowboats: $12/hour or $24/2 hours
  • Single Kayaks: $12/hour or $24/2 hours
  • Tandem Kayaks: $12/hour or $24/2 hours
  • 4 Person Pedal Boats: $12/hour

Boat Center Rules:

  • Private watercraft may be launched at the hand launch only boat ramp at the bottom parking lot near the Boat Center.

  • Gas powered motors are not permitted on the lake. Electric motors are allowed.

  • Pets, with the exception of service animals, are not permitted in rental boats.

  • Children under the age of 13 must wear a PFD at all times when on the docks and boats. Ages 13 and over must carry a PFD with them at all times on the boats.

  • Rentals will only be given to those over age 18 with a valid photo ID.​

  • Lockers are not available. Please leave all personal items locked in vehicles.

  • No boats are permitted on the water for at least 30 minutes after thunder is heard.

Self-Launch Boating

Seneca Creek State Park Boating & Fishing, photo by Yudong SongClopper Lake

The 90-acre Clopper Lake provides a great venue for small, flatwater boating in the heart of Montgomery County. Private watercraft (no gas motors) are permi​tted throughout the year during normal park hours. Private watercraft must be removed from the lake at least 30 minutes prior to sunset. Boats are also available for rent at the park’s Boat Center.

Private watercraft including canoes, kayaks, paddle ​boards, and other small vessels, may be launched at the hand-launch area at the bottom parking lot just beyond the Boat Center. You must be able to lift your boat and carry it to the water; as there is no trailer-launch boat ramp at Clopper Lake. USCG-approved life-jackets must be on board for all occupants.​

Great Seneca Creek

For those looking for a stream experience, the Class I-II Great Seneca Creek is suitable for canoes and kayaks during wet weather periods. Be sure to check the USGS gauging station at MD-28, which should read 2.1 feet. Parking and a put-in site are available at MD-28. Take out is recommended at the Riley’s Lock boat ramp near the Seneca Aqueduct. Paddling time is approximately two hours.​​​​​​​​​​​​​​​​​​​​​