By Mail
Chesapeake & Ohio Canal National Historical Park Headquarters Office
1850 Dual Highway, Suite 100
Hagerstown, MD 21740-6620
By Phone
Park Headquarters 301-739-4200
Great Falls Tavern Visitor Center 301-767-3714
Brunswick Visitor Center 301-834-7100
Williamsport Visitor Center 301-582-0813
Cumberland Visitor Center 301-722-8226
If you encounter a life-threatening emergency while visiting the park, please call 911 or contact the Chesapeake and Ohio Canal National Historical Park's Emergency Hotline 1-866-677-6677.
By Email- Click on the link to fill out the form to contact Headquarters or email choh_information@nps.gov
C&O Canal NHP Headquarters
Click Here to Report a Safety Hazard along the C&O Canal
By Fax
301-739-5275
