Patapsco, Maryland, US
|Usual Difficulty||I-III (for normal flows)|
|Avg. Gradient||14 fpm|
|Max Gradient||30 fpm|
|PATAPSCO RIVER AT HOLLOFIELD, MD|
|usgs-01589000||200 - 2500 cfs||I-III||01h25m||109 cfs (too low)|
This long reach can be broken up into much shorter runs, and it usually is. The Hollofield Bridge to Ellicott City run, for instance, is only about 5.5 miles. See below for a description of these access points, and click on the Map tab to see them.
Time: varies wildly with water level. As little as 1.5 hrs to Ellicott City, and another 1.7 hrs
to Glen Artney after very heavy rain with no play, or around 3 hours to Ellicott City and another
3 hours to Glen Artney at a mild pace under average conditions.
Difficulty: I-III at up to about 3' on the Hollofield gauge, with some areas drifting into the IV's above 4-5'+ range.
Fun Factor 6.5 out of 10. (High water can add 2 or more to this total)
Water Quality: Mostly good, with some suspicious-looking hues of brown during a heavy runoff.
History: Amazingly, this river was once a route for barrels of tobacco to get from Catonsville to the even more amazingly once-navigable tidal waters at the Route 1 bridge in Elkridge. Visit this portion some time and try to imagine a sailboat coming upstream at you. It ain't easy.
The Patapsco river is a convenient local conundrum to the paddlers of Baltimore in that it features too much whitewater for recreational boaters, and way too much flatwater for whitewater boaters. If you have the gumption in the first case, the patience in the second, or you like to experience a multitude of conditions from straight-forward rapids, to narrow chutes, to big, lake-like, half mile paddles to dangerous hazards (that are optional) thrown in for spice, then this is the place for you.
You can start with a steep carry down at Woodstock Road, (just off Rte. 99) but to avoid nearly 5 miles of mostly flatwater, put in below Daniels Dam (at the end of Daniels Rd., just off Old Frederick). To trim another couple of mostly flat miles out, begin even farther down at the Hollofield bridge, which Old Frederick Road goes over. You'll still have a good four miles down to Ellicott City, and six beyond that should you choose to continue to Elkridge. (Click on the Map tab to see the location of these access points.)
If you have difficulty getting over the sandbar just a few yards downstream, it may still be runnable for the rest of the way: this is probably the shallowest spot on the entire river. The next mile is a mostly pretty run through the deepening gorge of the state park, that features a few class 2- rapids here and there. At high water this is a nice pushy, mostly rapidless run with trees (living, not fallen) being the biggest hazards.
Just below the US 40 bridge (US 40), there is a small increase in gradient resulting in a Class
II rapid which becomes a wave train at higher water levels. This rapid is all that's
left of the once deadly Union Dam. There are still some remnents of the dam on river left
and the river is still adjusting from it's removal. The next mile or so features a
variety of easy class 2 rapids, and a labyrinth of a rock gardens that will test all of your boat
control skills at lower levels. For incentive to prove your narrow turning ability, pretend the
rocks are mines which will explode on contact. Of course you would be a puff of smoke in the
first fifty feet below 2.0 or so if this were the case. There are a few interesting ledges with
very scrapy chutes, and some long pools that continue until the rocks begin turning into
boulders. Soon after you can make out the old Dickey mill on river left, marking the beginning of
the drops through Oella.
Make your way down on river right until you see the first decent rapid. It's a fairly long, bumpy (class 3- at lower water and 3+ or above at 3.5+') ride. Paddle down to the next rapid, a steep class 3 which ends in a nice recovery pool. There are a short combination of these coming up next called Oella Falls that culminate in Suicide, the last rapid that begins below a house sticking out of the cliff on river left, and twists left down into the backwater pool before Ellicott City. There are many lines here, and a decent surfing wave at the bottom of this at some levels. All these rapids are easy to eddy-scout at up to about 2.8 or so. Much beyond 3', and the eddies all wash out, making one wild III+/-IV run all the way from the river split (marked by a giant rock plastered with strainers in the center) to the bottom. At those levels, there are some sneaky holes with stopping potential through here, so keep a sharp eye out at the top of every big wave. A long pool takes you to the Ellicott City bridge where you can take out on river left, just before the 144 bridge.
If you decide to continue, the fun begins again. A major flood occured July 31, 2016 and changed the river considerably below the 144 bridge. After the flood, the line below the bridge is to stay river left through the first part of the rapid moving to center, at higher water with a big, long, bouncy wave train taking you down around the left-turning bend. There are a couple of rocks to avoid under the next train bridge around the corner, but the ride mostly settles after this with class 2 rapids and some riffles. The river begins to cut through sand/gravel bars which were deposited in the backwater of the now removed Thistle Dam. A slightly larger rapid occurs where the Dam once was located. Shortly below here is the Illchester Road bridge which is a common take-out for this section of the river.
The rapids below here pick up for a short bit and turn to riffles before they die for good in the backwater of the next dam, a 25-footer that's carried on river right up a steep slope, and then down around a trail to the bottom. Rumor has it that this dam has been run, maybe due to a safer design, but big rocks at the bottom, very powerful water, and well, hell, a 25-foot drop make the walk mandatory. There is a little gravel island at the bottom that makes a good place to get back in your boat at lower levels. Below here, there are some fun class 2+ rapids (turning into wild wave trains at higher levels).
The rest of this run is a pleasant drift through Patapsco State Park, featuring lots of easy riffles, some precariously shallow gravel bars at low water, and interesting scenery, including a swinging bridge, plenty of heron, and the occasional marauding beaver in colder weather. Takeout is at the Glen Artney area of the Park, marked by a brick bridge running over the water just past some ballfields and no-swimming sign on river left. If you continue on to Elkridge, you'll get to see the Viaduct, and ancient rotting train bridge (still used) that's a bit unnerving if you happen to be under it when a train comes by. The next takeout is at the Route 1 bridge on river left in Elkridge. If your shuttle happens to be a motorcycle, enjoy a beer at Daniel's, one of the last drive-up motorcycle bars on the continent. And don't ask for a draft...
|Mile||Rapid Name||Class||Features (Legend)|
|4.0||Old Hollofield Bridge||N/A|
To avoid nearly 5 miles of mostly flat water, put in below Daniels Dam (at the end of Daniels Rd., just off Old Frederick).
To trim another couple of mostly flat miles out, begin even further down at the Hollofield bridge, which old Frederick Road goes over. You'll still have a good four miles down to Ellicott City, and six beyond that should you choose to continue to Elkridge.
Take-out under bridge river right.
A long pool takes you to the US 1 Elkridge bridge where you can take out on river left.