Four Locks
Boat ramp · on Potomac River · near Four Locks · Maryland
Closed
Listed as closed by Maryland DNR Public Water Access Sites.
source · checked October 18, 2026
At the launch
- Type
- Boat ramp
- Fee
- Free
- Ramp lanes
- 2
- Ramp surface
- Concrete
- Trailer parking
- 30 spaces
- Restrooms
- Yes
- Hours
- 24 hrs.
- Managed by
- National Park Service
- Website
- home.nps.gov
- Coordinates
- 39.61444, -77.94635
Conditions
- Weather forecast for this launch · National Weather Service
- Water level, flow at the POTOMAC RIVER AT HANCOCK, MD gauge · USGS, 13.6 mi away on Potomac River
Water level
Latest reading loads here; without it, see the USGS page below.
USGS gauge POTOMAC RIVER AT HANCOCK, MD, 13.6 mi from this launch on Potomac River: water level, flow, 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
- McCoys Ferry · 1.2 mi · Potomac River
- Fort Frederick State Park Soft Launch · 3.2 mi · Potomac River
- Fort Frederick State Park / Big Pool boat ramp · 3.3 mi · Big Pool Lake
- Cherry Run · 4.6 mi · Potomac River
- Rt 9 Bridge · 5.6 mi · Back Creek
- Indian Springs WMA / Blairs Valley Lake · 5.8 mi · Blairs Valley Lake
Sources
- Maryland DNR Public Water Access Sites record -77.94626,39.61451 · Public data (Maryland DNR), DNR spatial data disclaimer only; no use limitations stated
- National Park Service points of interest (boat launches) record {D043E065-7818-40AA-A3E2-8E3F5C749596} · US federal government data, public domain
- OpenStreetMap w1378996600 © OpenStreetMap contributors, ODbL
Why it is listed as public: listed by Maryland DNR Public Water Access Sites and National Park Service points of interest (boat launches). Something wrong, or is this launch private? Send a correction; it goes to a person.