Potomac River - Great Falls (MD Lines)


Comment/Warn Report Level/Upload Photos

Potomac River,

Disclaimer

Great Falls (MD Lines)

Usual Difficulty V+ (may vary with level)
Length 1 Miles
Avg. Gradient 100 fpm
Max Gradient 500 fpm

2007 Great Falls Race


2007 Great Falls Race
Photo of Geoff Calhoun by Rick McNamara taken 1184385600 @ 2.76

Gauge Information

Name Range Difficulty Updated Level
POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA
usgs-01646500 2.60 - 3.20 ft V+ 00h39m 3.91 ft (rc= 2.1 )


River Description

This reach description was borrowed/adapted from the WorldKayak.com river wiki.

Overview
Great Falls of the Potomac River is a major set of rapids located about 15 miles upstream of Washington, DC. The main Falls lines drop fifty feet in one-tenth of a mile, creating a Class V+ set of waterfalls. In addition, a portion of the river flows around Olmstead Island in a channel called the Fish Ladder (additional channels flow at higher water).
History
Paddlers have known about Great Falls as long as there has been whitewater kayaking. Many of the features -- such as the Spout, the Fingers, the Fish Ladder -- have names that predate paddling, in some cases by hundreds of years. But it was not until paddlers started running waterfalls regularly in the 1970s that paddlers began to seriously consider running the Falls. The first descent of Great Falls was made in 1975 by local experts Tom McEwan and Wick Walker, with the second descent by Steve McConaughy and Great Falls National Park Ranger Bill Kirby.
Access
Access to the river is restricted on both the Maryland and Virginia sides.

Maryland Side - Paddlers may put in anywhere on the Maryland shore, but may not leave the boardwalk across Olmstead Island. To run the Falls from the Maryland side, most people put in above and run the aqueduct dam, or put in below the dam at higher levels.

Virginia Side - Paddlers may not put in upstream of the Falls. To run the Falls from the Virginia side you must put in at Fisherman's Eddy and then ferry and carry above both O-Deck rapid and the Falls themselves.

Carry up the Flake for multiple laps. If the rocks are wet, this can be sketchier than running the Falls.
Running Great Falls is currently unrestricted. However, to maintain good relations with the National Park Service paddlers voluntarily restrict their runs to less populated times in the park-early morning, late evening, or weekdays-and limit group size and time spent in the rapid.
The Park Service is concerned about running the Falls at popular times because it can draw spectators down off the observation decks and closer to the river's edge -- where they might fall in the water and drown. And, if paddlers spend a lot of time running around and relaxing in the Falls, it can give the impression that such activities are not very difficult or dangerous. Since 1975, at least 30 people have drowned in Great Falls, so the Park Service is understandably nervous about this.
For more information, see the Guidelines for Running Great Falls as written by the Canoe Cruisers Association in 1999. Today regular Falls runners continue to dialog with the Park Service to make sure access remains open to all.
River Signals and Helicopters
The Park Service patrols the Potomac with a helicopter most summer weekends. In an effort to minimize confusion, the helicopter pilots are trained to recognize three signals from paddlers.
  • Everything OK - Tap the top of your helmet with one hand.
  • Emergency - Wave both arms together over your head (like jumping jacks), holding brightly colored objects if possible.
  • Need Medical Attention - Form an X with arms or paddles.
Don't signal the helicopters unless you need them! And if being inspected, be sure to give the OK sign if you don't need assistance. Sometimes hikers call in "emergencies" that aren't actually emergencies.

StreamTeam Status: Not Verified
Last Updated: unknown

Editors

Stream Team Editor
Scott Anderson
Vienna, VA


Horseshoe @ high water

Detail Trip Report Edit  Horseshoe @ high water  Potomac River, MD(145.63KB .jpeg)

Pummel at high water

Detail Trip Report Edit  Pummel at high water  Potomac River, MD(186.94KB .jpeg)

Pummel time-lapse

Detail Trip Report Edit  Pummel time-lapse  Potomac River, MD(145.37KB .jpeg)

Joe at Horseshoe

Detail Trip Report Edit  Joe at Horseshoe  Potomac River, MD(195.04KB .jpeg)

Looking down from Pummel

Detail Trip Report Edit  Looking down from Pummel  Potomac River, MD(180.86KB .jpeg)

Charlie's Hole

Detail Trip Report Edit  Charlie's Hole  Potomac River, MD(135.15KB .jpeg)

Pummel

Detail Trip Report Edit  Pummel  Potomac, MD(149.34KB .jpeg)

Pummel

Detail Trip Report Edit  Pummel  Potomac, MD(149.34KB .jpeg)

Pencil Sharpener

Detail Trip Report Edit  Pencil Sharpener  Potomac, MD(1.14MB .jpeg)

2007 Great Falls Race

Detail Trip Report Edit  2007 Great Falls Race  Potomac, MD(163.48KB .jpeg)

Horseshoe race line

Detail Trip Report Edit  Horseshoe race line  Potomac, MD(1.32MB .jpeg)

Horseshoe

Detail Trip Report Edit  Horseshoe  Potomac, MD(229.79KB .jpeg)

Z-Turn

Detail Trip Report Edit  Z-Turn  Potomac, MD(177.56KB .jpeg)

Horseshoe

Detail Trip Report Edit  Horseshoe  Potomac, MD(229.79KB .jpeg)

Pencil Sharpener

Detail Trip Report Edit  Pencil Sharpener  Potomac, MD(1.14MB .jpeg)

The Notch

Detail Trip Report Edit  The Notch  Potomac, MD(197.42KB .jpeg)

The Notch

Detail Trip Report Edit  The Notch  Potomac, MD(197.42KB .jpeg)

Maryland High Lines

Detail Trip Report Edit  Maryland High Lines  Potomac, MD(70.88KB .jpeg)

Horseshoe high water

Detail Trip Report Edit  Horseshoe high water  Potomac, MD(76.36KB .jpeg)

Pummel

Detail Trip Report Edit  Pummel  Potomac, MD(62.32KB .jpeg)

Pummel

Detail Trip Report Edit  Pummel  Potomac, MD(52.25KB .jpeg)

Slide river left of Pummel at high water

Detail Trip Report Edit  Slide river left of Pummel at high water  Potomac, MD(63.34KB .jpeg)

BOOF!

Detail Trip Report Edit  BOOF!  Potomac, MD(60.60KB .jpeg)

BOOF

Detail Trip Report Edit  BOOF  Potomac, MD(51.39KB .jpeg)


Gauge Information

Gauge Description:


It's never too low for the MD Lines.  Below 2.6' is ELF, but there are runnable channels at least down to 2.4', and most summers the river never gets that low.  So when everyone else is whining about the drought, you still have a class V playground in your backyard.  Count your blessings.  I'd say 2.6' to 2.7' is a good first time level.  Above 2.8' the holes get mean, and above 3.0' they're vicious.  The MD Lines can certainly be run higher than 3.1', but if you're considering it you don't need this guide.


The gage is located at Little Falls (aka Brookmont) Dam, where the river is very wide.  Consequently, an inch on the gage can translate to a foot at Great Falls.  The gage is also 8-9 miles downstream, so if the river is rising or falling rapidly there could be a discrepancy between the gage reading and the actual level.  Scout the rapids visually if there is any doubt.  (You were going to do that anyway, right?)

USGS Potomac River / Little Falls Gage

NOAA Prediction for Little Falls Gage

 

 

 

Gauge Information

Name Range Difficulty Updated Level
POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA
usgs-01646500 2.60 - 3.20 ft V+ 00h39m 3.91 ft (rc= 2.1 )

RangeWater LevelDifficultyComment
2.20 -2.40 ft somewhat Low-barely Low V+
2.40 -2.60 ft extremely Low-somewhat Low V+
2.60 -2.80 ft barely runnable-med runnable V+
2.80 -3.00 ft med runnable-a bit pushy runnable V+
3.00 -3.20 ft a bit pushy runnable-high runnable V+
3.20 -3.60 ft somewhat High-somewhat High V+

Report - Reports of Potomac River Great Falls (MD Lines) and related gauges

Reports give the public a chance to report on river conditions throughout the country as well as log the history of a river.

Reports

When River/Gauge Subject Level Reporter
Potomac [MD] BOOF! 4.1 Potomac Pathways
Potomac River [MD] Looking down from Pummel n/a Scott Anderson
57d08h37m /POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA [MD] Account of 09/27/09 0.00 ft n/a
57d08h39m /POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA [MD] Account of 09/27/09 0 cfs n/a
2y131d01h23m Potomac [MD] The Notch 2.69 Scott Anderson
2y134d01h23m Potomac [MD] Z-Turn 2.76 Scott Anderson
2y145d01h23m Potomac [MD] Pummel 2.9 Scott Anderson

WXPort

News





icon of message No guide books for this stream. If you know of a book that describes this stream please contact and advise the StreamTeam member for this run.

User Comments


2008-08-13 05:06:05 (467 days ago)
Mark AndesDetails
The rocks that make up the Flake and MD side carry up get extremely hot. Even when the day time
high is bearable being out on the rocks here adds a whole new element keeping in mind that the
water temperatures can reach 90 degrees. When going out there bring water and be very wary of the
dangers of overheating and it's ability to affect your performance.
Add a Comment

Rapid Summary

Mile Rapid Name Class Features (Legend)
0.5Pummel5.0Waterfall Photo
0.5Pencil Sharpener5.0Photo
0.5Z-Turn5.0Photo
0.5Charlie's Hole5.2Hazard Photo
0.5Horseshoe5.1Photo

Rapid Descriptions

Pummel (Class 5.0, Mile 0.5)

Pummel

Pummel
Photo of Maggie Snowel by Sean Devine taken 1183435200 @ 2.9

 

Also known as Sunshine (née Sunburst) and Tumblehome.  The line is level-dependent.  Here are my general rules of thumb based on the Little Falls gage:

 

LF > 2.75 - Build up some speed and launch off the point.  This is quite possibly the SIKest boof known to mankind.  Miss the boof and learn how Pummel got its name.

 

2.60 < LF < 2.75 - The point turns into a roostertail, so run right instead.

 

LF < 2.60 - The right side dries up, forcing you to run the Notch on river left.

 

Below Pummel you have three options (from left to right): Pencil Sharpener, Z-Turn, and Charlie's Hole.



Pencil Sharpener (Class 5.0, Mile 0.5)

Pencil Sharpener

Pencil Sharpener
Photo of Jason Beakes by Ryan Moore taken 1184385600 @ 2.76

 

Enter the narrow slot against the river left shore, boof 2-3' onto a boil, and slide down a broken shelf.  You must anticipate the side current or it will push you into the inhospitable crack on the left.  Pencil Sharpener is the preferred option when LF < 2.80.



Z-Turn (Class 5.0, Mile 0.5)

Z-Turn

Z-Turn
Photo of Maggie Snowel by Thilo Rusche taken 1184385600 @ 2.76

 

Start left of center, then cut hard left down a twisting drop next to a huge midstream boulder.  Be careful not to get washed around the right side of this boulder into Charlie's Hole.  Choose a conservative line.  Z-Turn is the preferred option when LF > 2.80.



Charlie's Hole (Class 5.2, Mile 0.5)

Charlie's Hole

Charlie's Hole
Photo of Mark Andes by Rick McNamara

 

A 10-foot sluice into a super-powerful hole surrounded by underwater sieves.  It’s named after Charlie Crowley, who escaped by crawling out along the bottom (bursting both eardrums in the process).  This line used to be run regularly by boofing left into the eddy, but after numerous close calls and one fatality almost nobody runs it anymore.  There is no margin for error.

 



Horseshoe (Class 5.1, Mile 0.5)

Horseshoe

Horseshoe
Photo of Seth Chapelle by Maggie Snowel taken 1184385600 @ 2.76

 

The scariest hole on the Potomac other than Charlie's, Horseshoe has been the site of many near-drownings.  The line is level-dependent.  Here are my general rules of thumb:

 

LF > 2.90 - Left line.  Boof onto a rocky runout.

 

2.80 < LF < 2.90 - Right line is beefy and left line is manky.  Pick your poison.

 

2.60 < LF < 2.80 - Right (standard) line.  Boof off the narrow shelf that extends past the hole.  You can approach this directly or by doing a hairy ferry on the SOS wave.

 

LF < 2.60 - Center line.  Boof off the tongue.

 

If you get stuck in Horseshoe, your chance of surfing your way out is virtually nil, so save energy for the swim.





 River Alert  
 State News  
 River Links  
 NWRI - Potomac River Great Falls (MD Lines) (mobile)