McMahons Mill
Carry-in (canoe and kayak) · on Potomac River · near Williamsport · Maryland
Closed
Listed as closed by Maryland DNR Public Water Access Sites.
source · checked October 18, 2026
At the launch
- Type
- Carry-in (canoe and kayak)
- Fee
- Free
- Car parking
- 5 spaces
- Restrooms
- No
- Hours
- Day Light
- Managed by
- National Park Service
- Website
- nps.gov
- Coordinates
- 39.53026, -77.82436
Conditions
- Weather forecast for this launch · National Weather Service
- Water level at the POTOMAC RIVER AT HARPERS FERRY, WV gauge · USGS, 15.2 mi away on Potomac River
Water level
Latest reading loads here; without it, see the USGS page below.
USGS gauge POTOMAC RIVER AT HARPERS FERRY, WV, 15.2 mi from this launch on Potomac River: water level, a reading every 15 minutes. Readings and history at USGS.
On Potomac River
River in Maryland. All launches on Potomac River.
Community
Where people who use Potomac River talk about it.
Nearby launches
- Big Slackwater · 2.3 mi · Potomac River Reservoir
- Dam 4 · 2.4 mi · Potomac River Reservoir
- Dam #4 · 2.5 mi · Potomac River
- Taylors Landing - West · 3.7 mi · Potomac River
- Taylors Landing - East · 3.7 mi · Potomac River
- Williamsport · 4.8 mi · Potomac River Reservoir
Sources
- Maryland DNR Public Water Access Sites record -77.82436,39.53026 · Public data (Maryland DNR), DNR spatial data disclaimer only; no use limitations stated
Why it is listed as public: listed by Maryland DNR Public Water Access Sites. Something wrong, or is this launch private? Send a correction; it goes to a person.