Alerts & Conditions

Alerts

 

Alerts and Closures

Please check directly with the local trail manager of the Potomac Heritage National Scenic Trail section you will be visiting for the most accurate and up-to-date information.
 

Trail Issues? Contact Us!

Emails are routed to the Potomac Heritage National Scenic Trail general email inbox.

Email Us
/pohe/index.htm

This phone number will connect you to the C&O Canal National Historical Park's mainline.

Voice: 301-739-4200
 

Current Weather and Forecast

The weather along the Potomac Heritage National Scenic Trail can change quickly and can deviate considerably from the forecast, so prepare for all conditions when planning your adventure.

For additional details or other forecasts, visit the National Weather Service.

 

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Washington, DC Air Quality

 

Sea Nettles Probability of Encounters (Experimental)

Click the image below for the most up to date maps.

 
Sea Nettles Probability of Encounters

NOAA Photo

The maps are experimental and depict the probability of encountering the sea nettles, Chrysaora chesapeakei in the Chesapeake Bay and its tributaries. Click the image to view the Sea Nettle Probability Guidance.

 
Great Falls VA 2010 Flood VS a Sunny Day
Great Falls, Virginia on a sunny day vs the 2010 flood event.

NPS

Last updated: July 3, 2025

Contact Info

Mailing Address:

Potomac Heritage National Scenic Trail
c/o Chesapeake and Ohio Canal National Historical Park
142 W. Potomac St.
Williamsport, MD 21795

Phone:

301-739-4200
This phone number will connect you to the C&O Canal National Historical Park's mainline.

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