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Little Falls Dam

Highlight • Monument

Little Falls Dam

Mountain biking

3.8

(9)

Gravel riding

5.0

(1)

Running

5.0

(1)

The Little Falls Dam, also known as Brookmont Dam, is a significant man-made monument located on the Potomac River, approximately two miles above Chain Bridge and just below the scenic Mather Gorge. Constructed in 1959 by the U.S. Army Corps of Engineers, this low dam plays a crucial role in the water supply system for Washington, D.C., diverting a substantial portion of the river's flow into the Washington Aqueduct. It effectively separates the Upper Potomac River from the Lower Potomac…

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Chesapeake and Ohio Canal National Historical Park

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  • Location: Brookmont, Montgomery County, Maryland, United States

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    September 11, 2021

    Mountain biking

    The Little Falls Dam is a low dam built in the Potomac in 1959. It now separates the Upper Potomac River and Lower Potomac River, forming the Little Falls Reservoir.
    Due to the undercurrent of the Potomac created by the dam's design, it is very dangerous for swimmers and boaters.
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    January 16, 2025

    Hiking

    The Little Falls Dam is the spot that separates the Upper Potomac River and Lower Potomac River. It was constructed in 1959.
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    Nearby routes

    Best routes near Little Falls Dam

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    23

    riders

    #1.

    Great Falls Overlook – Angler's Inn parking lot loop from Congressional Country Club

    52.3km

    04:01

    280m

    280m

    Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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    Moderate
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    Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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    Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

    Easy

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    Elevation -10 m

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    Saturday 16 May

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    34 %

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    Max wind speed: 21.0 km/h

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    Location: Brookmont, Montgomery County, Maryland, United States

    Frequently Asked Questions

    What makes the Little Falls Dam dangerous for water activities?

    The Little Falls Dam is known for its extremely dangerous undercurrents, often referred to as a "drowning machine." Its design creates powerful recirculating flows at its base that can trap swimmers and boaters, making escape very difficult. While alterations were made in 2000 to reduce these risks, the area remains highly hazardous. It is crucial to avoid entering the water near the dam's base for any activity.

    Are there specific hiking trails or popular routes near the Little Falls Dam?

    While the immediate vicinity of the dam itself is not designed for direct access, the surrounding parklands and the Potomac Heritage Trail offer numerous opportunities for hiking. Popular routes often follow the river upstream or downstream from access points like the C&O Canal Towpath, providing views of the river and the dam from a safe distance. These trails vary in length and difficulty, catering to different preferences.

    What is the typical terrain and elevation gain like on trails near Little Falls Dam?

    Trails in the area, such as sections of the Potomac Heritage Trail and the C&O Canal Towpath, generally feature relatively flat to gently rolling terrain, especially along the canal. However, some paths leading down to the river or through wooded areas can involve moderate inclines and uneven surfaces. Significant elevation gain is not a primary characteristic of most trails directly adjacent to the dam.

    Is the Little Falls Dam area suitable for families with children?

    Yes, the surrounding parklands and trails can be family-friendly, provided that extreme caution is exercised regarding water access. The C&O Canal Towpath, for example, offers a wide, flat surface suitable for strollers and younger children. It's important to keep children away from the river's edge near the dam due to the dangerous currents. Focus on walks on established trails and enjoy the views from safe vantage points.

    Are dogs allowed on trails near Little Falls Dam?

    Yes, many trails in the vicinity, including the C&O Canal Towpath, are dog-friendly. Dogs should be kept on a leash at all times to ensure their safety and the comfort of other visitors, especially given the potential hazards near the river. Always remember to clean up after your pet.

    What are the parking options for visiting Little Falls Dam?

    Parking is typically available at various access points along the C&O Canal Towpath or in nearby park areas that provide access to trails leading towards the dam. Specific parking lots can be found at locations like the Brookmont parking area or further downriver towards Chain Bridge. It's advisable to check local park service websites for the most current parking information and any potential fees.

    Are there any natural features or points of interest to look out for near the dam?

    Beyond the dam itself, the area is rich in natural beauty. You can observe the powerful flow of the Potomac River, especially from safe viewpoints. The dam is located just below Mather Gorge, a scenic section of the river known for its dramatic cliffs. The surrounding parklands are home to diverse flora and fauna, offering opportunities for birdwatching and enjoying the natural environment.

    How does the Little Falls Dam impact fish migration?

    The Little Falls Dam originally blocked fish migration routes several miles below their natural end at the Great Falls of the Potomac River. To mitigate this, the dam was altered in 2000 to improve fish passage, allowing certain species to move upstream. This modification was part of ongoing efforts to support the river's ecosystem.

    Is public transport available to reach the Little Falls Dam area?

    While there isn't direct public transport to the dam itself, several bus routes operate in the surrounding neighborhoods of Washington D.C. and Maryland. Visitors can often take public transport to areas like Georgetown or near Chain Bridge and then access the C&O Canal Towpath, which leads towards the dam. Planning your route with a public transport app is recommended.

    What are the best times of year to visit Little Falls Dam for hiking?

    The area around Little Falls Dam can be visited year-round. Spring offers lush greenery and blooming wildflowers, while autumn provides stunning fall foliage along the Potomac. Summer is popular but can be hot and humid, so early mornings or late afternoons are best. Winter offers a stark, serene beauty, though trails can be icy or muddy, requiring appropriate footwear.

    Are there any cafes or restaurants near Little Falls Dam?

    The immediate vicinity of the dam is primarily natural parkland, so there are no cafes or restaurants directly adjacent. However, if you venture a short distance into nearby neighborhoods like Brookmont, Palisades, or Georgetown, you will find a variety of dining options, from casual cafes to full-service restaurants.

    Other Popular Places to Check Out

    Lock 6, Chesapeake and Ohio Canal

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