Current Park Conditions


Park Closure


Towpath Conditions

Milepost 1–25

Including Georgetown, Washington D.C.; Bethesda, MD; Potomac, MD; Seneca, MD

  • Georgetown Locks 3 & 4 (MP 2)

    Towpath Closed. Towpath detour around the Lock 3 plaza located between 30th Street and Thomas Jefferson Street in Georgetown. Lock 3 plaza and surrounding area will be closed for the reconstruction and repairs of Locks 3 and 4. For more information
  • Billy Goat Trail (MP 9.9)

    Open, Section A
    Closed, Section B
    Open, Section C
  • Great Falls Tavern Area (MP 14)

    Towpath Closed. Construction for the Lock 5-22 Project is ongoing throughout the Great Falls area. Please use the marked towpath detour at Great Falls to get around the construction site. For more information.
  • Closed. Construction will be ongoing at Swain's Lock (Lock 21). A majority of the parking lot will be closed through July 2018. For more information

Milepost 25–50

Including Poolesville, MD; Whites Ferry, MD; Dickerson, MD; Point of Rocks, MD

Milepost 50–100

Including Brunswick, MD; Harpers Ferry, WV; Shepherdstown, WV; Downsville, MD; Williamsport, MD
  • Lander Lock Parking Lot

  • Catoctin Aqueduct- Brunswick Family Campground (MP 51.5- MP 54)

    Towpath Closed. Due to a washout at Culvert 82, the towpath is closed in this section. There is no detour in place at this time. From the west, exit the towpath at Brunswick (MP 55), or from the east at Lander Lock 29 (MP 50.9). Please contact Shepherdstown Pedal and Paddle at 304-876-3000 or River and Trail Outfitters at 301-834-9950 to arrange for a shuttle around the detour.

  • Taylors Landing to Dam 4 (MP 81-MP 84.5)

    Caution, The park has recieved several reports that this stretch of towpath is extremely slick and difficult to travel through due to silt deposits on the towpath from flooding. There is no marked detour at this time. Please use extreme caution in this area.
  • McMahons Mill to Burnside Farm (MP 88-MP 89)

    Towpath Closed. Due to high water and flooding, this stretch of towpath is closed. Please use the marked detour route along Avis Mill Road, Dellinger Road, Neck Road, and Spring Dell Road.
  • Conococheague Aqueduct (MP 100)

    Closed, While the Conococheague Aqueduct in Williamsport at MM 99 is being restored, find a marked towpath detour upstream and downstream. Please follow the marked detour route. For more information.

Milepost 100–150

Including Big Pool, MD; Hancock, MD; Little Orleans, MD

Milepost 150–184.5

Including Paw Paw, WV; Oldtown, MD; Cumberland, MD
  • Paw Paw Tunnel

    Open. Construction for phase 2 of the scaling project expected to begin in mid-July 2018.

River Conditions

Raging Potomac River above flood stage.
Raging Potomac River well above flood stage at Great Falls, Fall 2011

NPS Photo

The Park monitors Potomac River levels to determine when portions of the towpath, hiking trails or parking areas might be affected by rising river levels. By visiting the National Oceanic and Atmospheric Administration - National Weather Service Advanced Hydrologic Prediction Service, you can see a timeline of expected river rises and crests to help plan your visit to the park.

Section A of the Billy Goat Trail often closes due to flooding. Under normal conditions, the trail is closed when the gauge at Little Falls reaches 5 feet and reopens when the gauge falls to 4.8 feet. However, under certain circumstances, the trail may be closed at lower levels. Please call the Great Falls Tavern Visitors Center at 301-767-3714 during regular business hours for the latest information on trail closures.


Last updated: June 20, 2018

Contact the Park

Mailing Address:

1850 Dual Highway, Suite 100
Hagerstown, MD 21740


(301) 739-4200

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