This photo needs editing.
Difficulty II-III(V)
Length 2 Miles
Flow Range 600 - 3000 CFS
Flow Rate as of: 1 hour ago ~ 118 [CFS] ℹ️
Reach Info Last Updated 04/05/2016 7:57 pm

River Description

This is a very scenic section of the Grass river and  is a great place to enjoy the natural beauty of the Grass river. Perfect for intermediate kayakers and open boaters, who want to be work on their skills before moving to the larger sections the Grass has to offer.


Canton - Cranberry Lake Area Reaches

Boland Creek                                                   Elm Creek 

Grass (1. Lampsons Falls to Downerville)       Grass (2. Downerville to Russell)      

Grass (3. Morley to Massena)                    Grass (4.Woods Bridge Road to Route 47)     

Grass, Middle Branch                                 Grass, North Branch   

Grass, Upper South Branch                        Grass, Lower South Branch (Twin Falls)         

Oswegatchie, E. Branch (2.)                           Oswegatchie, E. Branch (3.)

Oswegatchie, W. Branch                                   Plumb Brook


Google Map of New York Whitewater

New York Whitewater Paddlers Facebook Group

Rapid Descriptions

Long Rapid

Class - II Mile - 0.4
Rapid Thumbnail Missing

Class II wavetrains for about a mile.

Brumagin Rapids

Class - II Mile - 1
Rapid Thumbnail Missing

A short section of class II wave trains.

Copper Rock Falls

Class - III+ Mile - 1.2

Copper Rock falls consists of three drops. The first two are big class IV/V drops followed by the river splitting and a nice Class III slide on the left channel. Portaging this rapid is very easy due to a path along the left side of the river, with a nice big eddy and beach to pull out on.

This rapid can also be accessed from Toole Pond Road. There is a small path marked by a sign saying Copper Rock Falls is 0.5 miles from Newbridge.


Gage Descriptions

Season: April and May are generally the best months for the Grass, but Oct and Nov also offer windows of boatable flows following three or four days of good rain.

Flows: The USGS gauge on the Oswegatchie in Harrisville provides an "approximation". The benchmarks below have many variables, so make sure you assess each rapid yourself.

If Harrisville guage is dropping add 150 cfs to the gauge level.

At higher flows be prepared for Copper Rock Falls to be even larger, making portage almost necessary. The wave trains for the other rapids will also become large with bigger holes.

As the water drops, and is below 1000 expect to bump and scrap into rock while running each rapid.

Directions Description


Take Out: Newbridge-  While driving along Toole Pond road you will continue past the Twin Falls section, until you  come up to a small green bridge which will idenity the take out. The river will be change from your right side to the left side for the rest of Toole Pond road. 

Put-in:  After Newbridge continue up the road for about a mile, turn left on Spruce Mountain Road, which is a DEC gated road. Follow Spruce Mountain Road another mile till it stops at the bridge crossing the South Branch. The gate may be closed during spring and late fall due to conditions. It may be best to call the Potsdam DEC office and ask first.

From Watertown take the Ft Drum/RT 342 exit off I-81. Drive Past Ft. Drum on 342 to Rt 3. Turn Left (NE) on RT 3 and go 14mi past Harrisville.

From Harrisville drive 14 miles to County Rd 27A (2.2 mi past Fine & County Rd 58). Turn Left (N) on County Rd 27A. (You cross the East Branch of the Oswegatchie just after you make the turn on to 27A.) After 3/4mi on 27A you intersect County Rd 27, turn right (N) on CR 27 which takes you to Degrasse. Turn R. at the Intersection in Degrasse and cross the bridge. This is the take out. Check the visual gauge and scout the last rapid from the bridge.

From I-90 Albany/Utica take RT 12 in Utica N. to Lowville. Take 812 from Lowville which intersects RT 3 just S. of Harrisville. (Follow directions above from Harrisville.)

From Canada drive to Canton, NY. Take 68 SE (7.9mi) to Pierrepont and turn right (SW)on County RD 24. Take CR 24 for 5.5mi to CR 27 and turn left(S). Drive 9.75mi S. on CR 27 to Degrasse and the take out bridge. Check the visual gauge and scout the last rapid from the bridge.

No Accident Reports



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Moose River Video

Mark Singleton

2010 marked the 25th anniversary of protecting the Black and Moose rivers!  View an online video documentary on the Moose River and the early role that American Whitewater played in protecting this amazing river.


Gregory R. Miller


Alex Barham


Revision #Revision DateAuthorComment
1202071 05/08/13 Gregory R. Miller added gauge/description
1202065 05/08/13 Gregory R. Miller n/a
1202068 05/08/13 Gregory R. Miller
1202069 05/08/13 Gregory R. Miller edited class
1202070 05/08/13 Gregory R. Miller added gauge/description
1206035 04/05/16 Alex Barham Added local info