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Difficulty I-II
Length 3 Miles
Flow Range 400 - 4000 CFS
Flow Rate as of: 1 hour ago ~ 121 [CFS] ℹ️
Reach Info Last Updated 04/05/2016 7:54 pm

River Description

This section is great for beginner kayakers or open boat paddles to be able to get use to moving water. After the North Branch joins the Middle the fun begins. All the way down to Russell is nice class II choppy rapids. With only one real rapid that can easily be naviagated, this section is a great start before paddling the other sections of the Grass.


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


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". If Harrisville guage is dropping add 150 cfs to the flows above.

Below 600cfs  - You will scrape in numerous areas, however is still runnable.

The upper runnable level is not a definite as the river will have larger wave trains as the level increases. But caution should be taken as flipping may result in a longer swim.

Directions Description

To the put in- On Route 24 just north of the town of Russell boaters will see a NY state sign for Downerville, a no-longer existent town at the confluence of the N. branch of the Grasse with the Main branch. Coming from Russell, turn right (SE) onto dirt/gravel Donnerville road, this is just before a Transportation facility center, Continue on Donnerville road until you see an old cemetary on left, take the next right. Follow along the beaver pond, staying right at the fork then downhill to confluence. It is about a mile and a half from main road to take-out.

The road is shown on the map is in the wrong spot and is actually above the confluence of the north and main branches not below.

To the take-out- The take out is a small park (with a couple of picnic tables) on the River right side as County route 24 crosses over in the town of Russell

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.


Alex Barham


Gregory R. Miller


Revision #Revision DateAuthorComment
1206030 04/05/16 Alex Barham Added local info
1201925 03/19/13 Gregory R. Miller n/a
1201926 03/19/13 Gregory R. Miller
1201928 03/19/13 Gregory R. Miller
1201934 03/20/13 Gregory R. Miller update directions
1201935 03/20/13 Gregory R. Miller wordage
1202062 05/08/13 Gregory R. Miller Description added
1202066 05/08/13 Gregory R. Miller remove e