City: Accokeek, MD
County: Charles County
Type: Boat Ramp
Location: 38.68518033, -77.10114475
Air Temp: --
Location
Live Webcam
Nearby Gauge Conditions
Real-time data from USGS Water Services
Whitewater Runs on Potomac River
21 runs (12 nearby)Difficulty Classes
I Easy
II Novice
III Intermediate
IV Advanced
V Expert/Extreme
VI Unrunnable
Position relative to this access site:
Put-in at this location
This location is on the run
Take-out at this location
Downstream from here Upstream from here
Downstream from here Upstream from here
V
This location is on this run
Clara Barton Parkway to C&O Canal
0.1 mi
IV(V)
Upstream from here (16.8 mi from take-out)
2. Glebe Road to the Potomac
0.1 mi
III+(IV)
Upstream from here (16.1 mi from take-out)
7. Little Falls
2.4 mi
15 ft/mi
I
Upstream from here (18.9 mi from take-out)
6. Lock 10 to Sycamore Island
2.3 mi
II
Upstream from here (20.3 mi from take-out)
5. Anglers Inn to Lock 10
4.2 mi
II-III(IV)
Upstream from here (22.2 mi from take-out)
4. Sandy Beach/O-Deck to Anglers Inn
2.2 mi
8 ft/mi
V+
Upstream from here (23.7 mi from take-out)
3. Great Falls (Center Lines)
0.4 mi
100 ft/mi
IV-V(V+)
Upstream from here (23.7 mi from take-out)
3. Great Falls (Fish Ladder)
0.4 mi
100 ft/mi
V+
Upstream from here (23.7 mi from take-out)
3. Great Falls (MD Lines)
0.4 mi
100 ft/mi
V
Upstream from here (23.7 mi from take-out)
3. Great Falls (VA Lines)
0.4 mi
100 ft/mi
V+
Upstream from here (23.6 mi from take-out)
3. Through Great Falls (several runs)
0.4 mi
I
Upstream from here (44.5 mi from take-out)
0.9 Point of Rocks to Mouth of Monocacy
6.2 mi
These whitewater runs are on the same river but located more than 50 miles from this access site.
I-II
51 mi away
0.8 Potoma Wayside, VA or Weverton, MD to Point of Rocks MD
12.0 mi
II+
61 mi away
0.7 Dargans Bend Boat Ramp to Potoma Wayside, VA or Weverton, MD
5.5 mi
5 ft/mi
I
64 mi away
0.6 Shepherdstown, WV to Dargans Bend Boat Ramp
8.0 mi
I
71 mi away
0.5 Dam # 4 to Shepherdstown WV
12.0 mi
I
76 mi away
0.45 Williamsport to Dam #4
14.0 mi
I
81 mi away
0.4 Big Pool/Fort Frederick Campground to Williamsport MD
16.7 mi
I
89 mi away
0.35 Hancock, MD to Big Pool/Fort Frederick Campground
12.0 mi
I
102 mi away
0.3 Fifteen Mile Creek Boat Ramp to Hancock, MD
16.8 mi
I
110 mi away
0.2 Paw Paw Tunnel Campground to Fifteen Mile Creek Boat Landing
21.0 mi
Whitewater data from
American Whitewater
About This Access Site
Marshall Hall provides convenient access to the Potomac River in Accokeek, Charles County, with two public boat ramps, a boarding pier, and approximately 25 parking spaces for trailers. The facility is free and open year-round from dawn to dusk. Small hand-paddled boats—including kayaks and canoes—can be launched directly from either ramp or from the shoreline, making it an accessible option for paddlers of all experience levels. The site is located at the end of Route 227 (Marshall Hall Road), south of Route 210 (Indian Head Highway).
The launch point sits just above Greenway Flats in the Mount Vernon area of the river, offering access to a major waterway with substantial flow and current. The Potomac at this location is a large river (8th stream order) with an average flow of approximately 23,400 cubic feet per second and average velocity of 4.5 feet per second, so paddlers should be prepared for moderate current conditions. The area is popular for shoreline fishing and provides nearby access to recreational opportunities including Mason Neck National Wildlife Refuge.
The launch point sits just above Greenway Flats in the Mount Vernon area of the river, offering access to a major waterway with substantial flow and current. The Potomac at this location is a large river (8th stream order) with an average flow of approximately 23,400 cubic feet per second and average velocity of 4.5 feet per second, so paddlers should be prepared for moderate current conditions. The area is popular for shoreline fishing and provides nearby access to recreational opportunities including Mason Neck National Wildlife Refuge.
Nearby Recreation Areas
Elizabeth Hartwell Mason Neck National Wildlife Refuge
Located within
The White House and President's Park
Located within
National Mall and Memorial Parks
Located within
Fort Foote Park
Located within