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Chesapeake & Ohio Canal National Historical Park

Designation: National Historical Park

Location: District of Columbia, Maryland, West Virginia

Visit Official Park Website

📘 Park Overview

Preserving America's early transportation history, the C&O Canal began as a dream of passage to Western wealth. Operating for nearly 100 years the canal was a lifeline for communities along the Potomac River as coal, lumber, and agricultural products floated down the waterway to market. Today it endures as a pathway for discovering historical, natural, and recreational treasures.

🌤 Weather Information

The Washington, DC, area has a four-season Mid-Atlantic climate. Summertime is warm and humid, while winter can be cold and snowy. Precipitation averages 2-4” monthly, year-round. The climate gradually gets cooler and wetter further west along the canal where the elevation is higher.

🚗 Directions

The park has numerous access points. There is no main entrance. In Washington, DC, the C&O Canal begins in Georgetown on 29th Street NW, south of M Street, and runs alongside Canal Road / Clara Barton Parkway out of DC to the west. The entrance to Great Falls is at Canal Road and MacArthur Blvd in Potomac, MD. Park Headquarters and the Williamsport Visitor Center are located off I-81 at exit 2. Cumberland Visitor Center is off I-68 at exit 43C. See the maps page for more.

Images

The rushing river cascades over the rocks of the Potomac

The area of Great Falls is one of the reasons for the C&O Canal needed to be built for boat traffic.

Credit: NPS photo

A single bike rider on the towpath next to the widewater section of the canal.

The towpath offers a serene bike riding experience.

Credit: NPS photo

A whitewashed lockhouse sits above a stone lock with wooden crib.

Lockhouse 16 sits atop a stone outcropping above the lock.

Credit: NPS photo

Park sign in front of the historic Bowles House

One of seven Park visitor centers, the Bowles House sits along an empty canal bed in Hancock.

Credit: NPS photo

Fog over the Potomac River alongside the Canal towpath.

Big Slackwater is a 3 mile stretch where canal boats entered the Potomac River to travel above Dam 4.

Credit: NPS photo

A replica double decker canal boat is being pulled upstream by mules.

Mule-drawn canal boat rides are offered at Great Falls Tavern, April through October.

Credit: NPS photo/Buckner

The rushing river cascades over the rocks of the Potomac

The area of Great Falls is one of the reasons for the C&O Canal needed to be built for boat traffic.

Credit: NPS photo

A single bike rider on the towpath next to the widewater section of the canal.

The towpath offers a serene bike riding experience.

Credit: NPS photo

A whitewashed lockhouse sits above a stone lock with wooden crib.

Lockhouse 16 sits atop a stone outcropping above the lock.

Credit: NPS photo

Park sign in front of the historic Bowles House

One of seven Park visitor centers, the Bowles House sits along an empty canal bed in Hancock.

Credit: NPS photo

Activities

Topics

Operating Hours

Sunday
Sunrise to Sunset
Monday
Sunrise to Sunset
Tuesday
Sunrise to Sunset
Wednesday
Sunrise to Sunset
Thursday
Sunrise to Sunset
Friday
Sunrise to Sunset
Saturday
Sunrise to Sunset

Entrance Fees

Entrance - Private Vehicle
Pass is for one private, non-commercial vehicle — passenger cars, pickup trucks, RVs and vans — and is valid at the Great Falls area of the Chesapeake and Ohio Canal National Historical Park on the Maryland side of the Potomac River and Great Falls Park on the Virginia side of the Potomac River.
$20.00
Entrance - Motorcycle
Pass is for one motorcycle and is valid at the Great Falls area of the Chesapeake and Ohio Canal National Historical Park on the Maryland side of the Potomac River and at Great Falls Park on the Virginia side of the Potomac River.
$15.00
Entrance - Per Person
Pass is for one person 16 years of age or older — entering on foot or by bicycle — and is valid at the Great Falls area of the Chesapeake and Ohio Canal National Historical Park on the Maryland side of the Potomac River and at Great Falls Park on the Virginia side of the Potomac River.
$10.00
Entrance - Education/Academic Groups
Academic groups visiting the Great Falls area for a park ranger program have an automatic entrance fee waiver. Accredited academic institutions or groups coming to the Great Falls area of the park for a curriculum based visit, not attending a park ranger program must apply for an academic fee waiver. All materials must be provided in order to be considered. A fee waiver is not guaranteed. Allow up to two weeks for processing. Please email application to choh_educational_fee_waiver@nps.gov.
$0.00
Entrance - Non-commercial Groups
Includes church groups, college/school groups, scouts, service organizations, military, etc... Vehicles with passenger capacity of fewer than 16 persons, $20 for the vehicle. Vehicles with a passenger capacity of 16 or more persons, $10 per person age 16 and over. Removal of seats from a vehicle does not then qualify for the lower rate. Age and pass exemptions apply. The total fee charged for an Organized Non-Commercial Group will not exceed the $100 fee per vehicle.
$20.00
Commercial Entrance - Motor Coach
The commercial pass is valid for date of purchase plus six days at the Great Falls area of the Chesapeake and Ohio Canal National Historical Park on the Maryland side of the Potomac River. Please note that fees are based on vehicle capacity and not actual occupants.
$100.00
Commercial Entrance - Van
The commercial pass is valid for date of purchase plus six days at the Great Falls area of the Chesapeake and Ohio Canal National Historical Park on the Maryland side of the Potomac River. Please note that fees are based on vehicle capacity and not actual occupants.
$40.00
Commercial Entrance - Mini-bus
The commercial pass is valid for date of purchase plus six days at the Great Falls area of the Chesapeake and Ohio Canal National Historical Park on the Maryland side of the Potomac River. Please note that fees are based on vehicle capacity and not actual occupants.
$40.00
Commercial Entrance - Sedan
The commercial pass is valid for date of purchase plus six days at the Great Falls area of the Chesapeake and Ohio Canal National Historical Park on the Maryland side of the Potomac River. Please note that fees are based on vehicle capacity and not actual occupants.
$25.00

Entrance Passes

Annual Entrance - Park
Valid for one full year from the month of purchase. Permits access to the Great Falls area of the C&O Canal National Historical Park in Maryland and Great Falls Park in Virginia. The annual pass allows entrance for the pass holder and additional passengers in a single private non-commercial vehicle, or pass holder plus three adults when entering on foot or bicycle
$35.00

3-Day Weather Forecast

Friday, Jul 17

Sunny

Sunny

High: 97.7°F | Low: 71.4°F

Humidity: 49%

Wind: 6.3 mph

Rain Chance: 1%

UV Index: 3.1

Sunrise: 05:57 AM

Sunset: 08:33 PM

Moon: Waxing Crescent (15%)

Visibility: 6 mi

Dew Point: 73.9°F

Cloud Cover: 1%

Pressure: N/A mb

Air Quality (PM2.5): N/A

Ozone: N/A

EPA Index: N/A

Saturday, Jul 18

Partly Cloudy

Partly Cloudy

High: 91.4°F | Low: 69.3°F

Humidity: 77%

Wind: 13.2 mph

Rain Chance: 76%

UV Index: 5.4

Sunrise: 05:58 AM

Sunset: 08:32 PM

Moon: Waxing Crescent (23%)

Visibility: 5 mi

Dew Point: 74°F

Cloud Cover: 76%

Pressure: N/A mb

Air Quality (PM2.5): N/A

Ozone: N/A

EPA Index: N/A

Sunday, Jul 19

Sunny

Sunny

High: 86.6°F | Low: 69.2°F

Humidity: 68%

Wind: 9.6 mph

Rain Chance: 57%

UV Index: 7

Sunrise: 05:58 AM

Sunset: 08:31 PM

Moon: First Quarter (33%)

Visibility: 5 mi

Dew Point: 71°F

Cloud Cover: 57%

Pressure: N/A mb

Air Quality (PM2.5): N/A

Ozone: N/A

EPA Index: N/A

Weather Alerts (4)

⚠️ Air Quality Alert (Unknown)
▼

Air Quality Alert issued July 17 at 9:45AM EDT by NWS Baltimore MD/Washington DC

Effective: Jul 17, 2026 9:45am
Expires: Jul 18, 2026 12:00am

The Virginia Department of Environmental Quality has issued a
Code PURPLE Air Quality Alert Friday for
Northern Virginia.

A Code Purple Air Quality Alert means that air pollution
concentrations within the region are very unhealthy for the
general population. The risk of health effects is increased
for everyone. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone and fine particles
visit the web site Virginia DEQ air quality web site at
www.deq.virginia.gov

⚠️ Air Quality Alert (Unknown)
▼

Air Quality Alert issued July 17 at 8:30AM EDT by NWS Baltimore MD/Washington DC

Effective: Jul 17, 2026 8:30am
Expires: Jul 18, 2026 12:00am

The Virginia Department of Environmental Quality has issued a
Code RED Air Quality Alert Friday for
Northern Virginia.

A Code Red Air Quality Alert means that air pollution
concentrations within the region are unhealthy for the general
population. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone and fine particles
visit the web site Virginia DEQ air quality web site at
www.deq.virginia.gov

⚠️ Air Quality Alert (Unknown)
▼

Air Quality Alert issued July 16 at 5:10PM EDT by NWS Baltimore MD/Washington DC

Effective: Jul 16, 2026 5:10pm
Expires: Jul 18, 2026 12:00am

The Virginia Department of Environmental Quality has issued a
Code RED Air Quality Alert Friday for Northern Virginia.

A Code Red Air Quality Alert means that air pollution
concentrations within the region are unhealthy for the general
population. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone and fine particles
visit the web site Virginia DEQ air quality web site at
www.deq.virginia.gov

⚠️ Air Quality Alert (Unknown)
▼

Air Quality Alert issued July 16 at 4:40PM EDT by NWS Baltimore MD/Washington DC

Effective: Jul 16, 2026 4:40pm
Expires: Jul 18, 2026 12:00am

The Virginia Department of Environmental Quality has issued a
Code RED Air Quality Alert Friday for Northern Virginia.

A Code Red Air Quality Alert means that air pollution
concentrations within the region are unhealthy for the general
population. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone and fine particles
visit the web site Virginia DEQ air quality web site at
www.deq.virginia.gov

Park Alerts

Closures: Detours; Towpath; Points of Interest Park Closure
Multiple items are closed due to hazardous conditions or maintenance. See below for more details.

More Info

Winter Weather Alert Caution
Due to winter weather impacts, C&O Canal NHP some parking areas and the Overlook Trail remain closed for visitor safety and to allow crews to address hazardous conditions, including snow and ice.
DC Water Sewer Overflow Caution
DC Water is managing a sanitary sewer overflow from the Potomac Interceptor near Lock 10. Anyone with questions or in need of support can reach out to DC Water’s 24-Hour Command Center at (202) 612-3400 or visit https://www.dcwater.com/about-dc-water/media/potomac-interceptor-collapse.

More Info

Equestrian Traffic Temporarily Prohibited - Mile 124.5 to 155 Information
Horses are prohibited between Little Tonoloway (mile 124.5) and Paw Paw (mile 155) due to recent and ongoing towpath resurfacing. See more for details.

More Info

Hiking in Gold Mine Tract Caution
Visitors are restricted to the designated trails within the Gold Mine Tract in the Great Falls area. This location is generally defined as that area bordered by MacArthur Boulevard and Berma Road and depicted on the Great Falls Maryland Hiking Map.

More Info

Trail Closure: Billy Goat Trail Section A Park Closure
Section A of the Billy Goat Trail is closed due to rising levels of the Potomac River. Other trails may also be impacted, visitors should use caution.
Billy Goat Trail Section A Closed Park Closure
Section A of the Billy Goat Trail is closed due to rising levels of the Potomac River.

Park Events

George Washington's Other American Revolution: The Patowmack Canal Company
After the American Revolution but before becoming the nation’s first president, George Washington had another revolutionary idea – a canal system that would promote expansion into the Ohio River Valley and beyond. Join us at the Great Falls Tavern Visitor Center to learn more about George Washington’s life, explore his dream of a canal system along the Potomac River, and discover how that vision helped to shape American expansion and commerce for over a century.   The program will take place on Saturdays and Sundays at 11:00 am and 1:00 pm. 

Date: Jan 17, 2026 12:00am to Jan 17, 2026 12:00am

Paid Event

Great Falls Discovery Space: Civilian Conservation Corps

Have you heard about the Civilian Conservation Corps (CCC)? Come visit the Discovery Space at Great Falls Tavern Visitor Center and learn about the New Deal Era initiative that helped improve our public lands. Discover the story of the two camps of African American CCC enrollees that helped make the canal the great place it is today. Explore the different projects these two camps completed on the canal and test your own building skills!

Date: Feb 5, 2026 12:00am to Feb 5, 2026 12:00am

Paid Event

Great Falls Discovery Space: Douglas Hike

In March 1954, William O. Douglas and 57 others hiked down the Chesapeake and Ohio Canal towpath to draw attention to the natural beauty and wonders of the ecosystems and history of the canal.  In honor of the 72nd anniversary of this hike, come visit the Discovery Space and learn about people who have spoken up to help preserve places like the canal!  Speak up and share your special places! And investigate how NPS preserves and conserves unique places across the nation. 

Date: Mar 1, 2026 12:00am to Mar 31, 2026 12:00am

Paid Event

Guided Tours of Rileys Lockhouse

Explore the life of a lockkeeper and family in the 1870's time period with a guided tour of one of the C&O Canal's original lockhouses. Girl Scouts offer free tours of the lockhouse and grounds at Lock 24. In addition, there may be various Victorian Era demonstrations such as laundry, cider pressing, making lemonade, churning butter or ice cream and more. Visitors are welcome to participate in the activities and taste the results. 

Open every Saturday and Sunday 1pm-4pm, March 21st through July 12th and August 16th through December 12th. The lockhouse will be closed for bad weather. 

Location: Rileys Lockhouse Rileys Lock Rd Poolesville, MD 20837

Date: Mar 21, 2026 12:00am to Jul 12, 2026 12:00am

Paid Event

Great Falls Discovery Space: Recreate Responsibly

The C&O canal is a trash free park! Visitors won’t find any trash cans at the park and should plan on carrying any trash out with them when they go. As spring arrives, the weather warms and visitation increases from people and plants alike, swing by the Discovery Space at Great Falls Tavern for some hands-on activities and explore why the “pack-in, pack-out" model and “Leave No Trace” are important to maintaining our natural spaces! 

Date: Apr 1, 2026 12:00am to Apr 30, 2026 12:00am

Paid Event

Abner Cloud House Tour

Built in 1801 by Abner Cloud, Jr., the house is considered one of the finest examples of Federal architecture in Washington D.C. Pre-dating the construction of the C&O Canal, the home of Abner Cloud served as the center of the family farm and fishing business.  Tour the Abner Cloud House and learn more about early 19th century farming, architecture, and the people who lived and worked on the property. 

The three-story, stone home is operated in parntership with The Colonial Dames of America and is open for tours on the first Sunday of each month from 12:00 pm - 5:00 pm. The Abner Cloud House is located at Fletchers Cove. Admission to Fletchers Cove and the Abner Cloud House is free.

Date: Apr 12, 2026 12:00am to Apr 12, 2026 12:00am

Paid Event

George Washington's Other American Revolution: The Patowmack Canal Company
After the American Revolution but before becoming the nation’s first president, George Washington had another revolutionary idea – a canal system that would promote expansion into the Ohio River Valley and beyond. Join us at the Great Falls Tavern Visitor Center to learn more about George Washington’s life, explore his dream of a canal system along the Potomac River, and discover how that vision helped to shape American expansion and commerce for over a century.   The program will take place on Saturdays and Sundays at 11:00 am and 1:00 pm. 

Date: Apr 12, 2026 12:00am to Apr 26, 2026 12:00am

Paid Event

Wildflower Walk

Join NPS lead hike on River Trail from 1:00 - 2:00 PM to learn about native plants and conservation at C&O Canal NHP. This is an easy, 1 mile trail that hosts native plants such as woodland phlox, golden ragwort, paw paw trees, violets, and trillium.

The River Trail is near the Great Falls Tavern in Potomac, MD.

Location: Great Falls Tavern 11710 MacArthur Blvd. Potomac, MD 20854

Date: Apr 22, 2026 12:00am to Apr 22, 2026 12:00am

Paid Event

Crossroads at Bridgeport

Join us to examine the remaining evidence of a small community serving an important transportation crossroads in the 1800’s. Bridgeport – a Canal lock and lockhouse, tavern and inn, stores, residences, and outbuildings for animals and storage – grew up at the intersection of the C&O Canal at Lock 38 and the Sharpsburg-Shepherdstown Pike. Here a mixture of people worked to serve the travelers and exchange news of the region. Learn about the role of the Ferry Hill Plantation in the formation and working of the Bridgeport hamlet.

Due to limited parking at Lock 38, participants are encouraged to arrive early and drive about Âź mile east on Canal Road (toward Antietam Creek Campground) to a larger parking area and walk back to Bridgeport/Lock 38. (Mile Marker 72.79)

Date: Apr 25, 2026 12:00am to Apr 25, 2026 12:00am

Paid Event

Ranger's Choice

Join us at the Great Falls Tavern Visitor Center for a ranger program and learn more about the history of the C&O Canal! A ranger will present a program with accompanying hands-on learning activities on topics including 19th-century fashion, the history of National Park Service rangers, period music, and more! 

Date: Apr 26, 2026 12:00am to Apr 26, 2026 12:00am

Paid Event

Visitor Center & Contacts

📍 Physical Address:
142 W. Potomac St.
Williamsport, MD 21795

🏤 Mailing Address:
142 W. Potomac St.
Williamsport, MD 21795

📞 Voice Phone: 301-739-4200

✉️ Email: CHOH_Information@nps.gov

Park Location


👏 Fun Fact
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