C&O Canal at Big Slackwater Hike

The Big Slackwater section of the C&O Canal south of Williamsport, MD was completely closed for more than 20 years because the towpath, squeezed into an incredibly narrow corridor between the Potomac on one side and high cliffs on the other, got flooded out once too often. This section has reopened after a $15 million restoration project that should solve the flooding problem. Starting from the Canal's Dam 4, we will head upstream and soon reach the inlet lock that marks the lower end of the Big Slackwater section. The next few miles should be both unusually scenic and unusually interesting as we admire the sturdily-rebuilt towpath beneath our feet. We continue past quaint McMahon Mill and Howell Cave (no relation that we know of) to Lock 41, where the Canal as we usually think of it resumes, with a prism and berm as well as the towpath. Total length of our easy stroll is about 8 miles. Bring beverages, lunch, and about $15 for transportation and trip fees. We'll meet and form carpools from the Grosvenor-Strathmore metro station at 9am. RSVPs close at 8pm the day before to allow for logistical planning. Additional Trip Details: Trip may be adjusted due temperature or river water level. Make sure to check Meetup for any last-minute trip changes. Please click here to review our release form. When you RSVP to an event, you affirm that you have read and agree to the terms of the release.