4 Mile Campsite
Knoxville, Maryland
Campground in Maryland.
Photos shown are stock images and may not represent the actual campground.
Mile 30.5 - Hiker-biker campgrounds are located along the towpath approximately every 5-7 miles. No fee or reservation required. Overnight stays are limited to one night. All sites include a chemical toilet, picnic table, grill, and drinking water. Please Note: Potable water may not be available at each campsite. Water is treated with iodine. Please plan to have water purification tablets with you. Water is turned off from November 15 to April 15 each year.
Rating
Reviews
Great Falls is popular during peak season. Reserve 2-4 weeks in advance for weekends and holidays.
Most parks have check-in after 1:00 PM and check-out by 11:00 AM. Call ahead if you'll arrive late.
Maryland weather can change quickly. Pack layers and check the forecast for Great Falls.
Don't miss local attractions near Great Falls. Ask the camp host for hidden gems and trails.
Mar 18, 2026
Chisel branch doesn't have dedicated sites like Swains Lock but is spacious enough for easily 10 groups to set up tents. There's river access via two trails on either end of the campsite. Two picnic tables and two fixed fire pits and one standing grill. Well and porta John too. You'll get airplane traffic for bothe DCA and IAD but traffic noise is relatively low.
Mar 18, 2026
It's very quiet this morning. I'm down here on the Towpath everyday. It's one of my favorite places to go.
Mar 18, 2026
Campsite is fine, consistent with most others. Not many trees for hammocking. BUT the well water from THIS pump tastes pretty darn good. Many of the other pumps taste varying degrees of rust and often smell like sewage even after the Sawyer filter. This spot is a great place to filter and fill up!
Mar 18, 2026
A beautiful view of the Potomac River (other campsites can have obstructed views). Level and grassy space for numerous tents. One picnic table. Two grills/fire rings. Water pump: squeaky...treated with iodine...drank plenty of it and had no issues. One well kept port-a-potty. Bonus: Paw Paw grove immediately upstream. Short trail to the river, space for fishing, sitting and enjoying the vie... A beautiful view of the Potomac River (other campsites can have obstructed views). Level and grassy space for numerous tents. One picnic table. Two grills/fire rings. Water pump: squeaky...treated with iodine...drank plenty of it and had no issues. One well kept port-a-potty. Bonus: Paw Paw grove immediately upstream. Short trail to the river, space for fishing, sitting and enjoying the view. You may hear Dulles air traffic...you may also hear road traffic across the river (Virginia side). Overall, we really enjoyed it and met our expectations.
Mar 18, 2026
Right off the C&O Canal Towpath, this area has 2 camp sites with 1 picnic table and 1 fire pit each and a shared well. The water was turned off when we stayed there (28 Nov) but we had a filter and there is easy access to the river. Lots of easily available firewood, though seems like in warmer months there is a LOT of undergrowth and lots of poison ivy. Beautiful river view and lots of bird life!... Right off the C&O Canal Towpath, this area has 2 camp sites with 1 picnic table and 1 fire pit each and a shared well. The water was turned off when we stayed there (28 Nov) but we had a filter and there is easy access to the river. Lots of easily available firewood, though seems like in warmer months there is a LOT of undergrowth and lots of poison ivy. Beautiful river view and lots of bird life! Bald eagles, pileated woodpeckers, cardinals, and more!
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