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Difficulty V
Length 4 Miles
Flow Range 0 - 1800 CFS
Flow Rate as of: 31 minutes ago 540 [CFS]
Reach Info Last Updated 05/01/2018 8:25 pm

River Description

Beta from Jan Wojtasinski:
The pictures on AW show the Upper Falls area. It is around 2 miles up Base Station Rd. (the location of the putin, shown below), and there is a pullout and forest service sign there. It is a popular swim spot in the summer. Upper Falls is the "big one" that drops into a basin, and about 300 yards downstream is a gorge with more drops in it. Upper Falls does not need much water to run, and can usually be bumped down at low flows. There is a nice swirly room of doom in there, and at higher water some of the holes become very dangerous, causing several drownings of swimmers. Also some of the walls appear to be undercut.
Below Upper Falls, about 300 yards down is another gorge that is fun. At lower water the bigger drops in it are not runnable. At higher flows they are runnable and fun, but the drop in the middle is shallow, and has a rock i believe on the left side of the landing (don't take my word for it). The second gorge is also commonly wood-choked; make sure you scout it before committing.
I would consider this more of a park and huck, put-in above Upper Falls and run maybe a mile down through the end of the gorge. It is fun when nothing else is running, and holds water late in the spring due to Mt. Washington runoff. At low flows Upper Falls is a 5 and the gorge is 4-5. At high flows I would say all 4+ - 5.
I am not sure what is above Upper Falls. If you check it out, let us know!
Back down by Rte. 302 is Lower Falls (the location of the takeout listed below), a large slide that is runnable at low flows as well. At higher flows, when the Ammo gauge is above 1500 cfs, Lower Falls becomes huge, and in my opinion pretty scary. A few scary rooms form on the left and the hole at the bottom is huge. At higher flows below Lower Falls is a fun class 3+-4 boogie run with some sizable holes. Very continuous, but short. A few miles down the road from Lower Falls is another fun runnable class 3-4 boogie section.
I'm not sure what's between Upper Falls and Lower Falls; there is gradient in there so I would imagine some drops.
Have fun!


Flow Info:

The range has been estimated based off the 75th percentile and the above beta. If you run this section please leave a comment below with the level to help build the correlation.

Rapid Descriptions


Gage Descriptions

Historical Flow Information

Historical Dates: Mean High Water Date: April 23rd / 707 cfs Mean Low Water Date:: August 27th/ Flow 63 cfs Based on 67 years of flow information
The table above gives the historical high and low flow dates for this particular stretch of river. This information is extrapolated from the USGS database.

Directions Description

We have no additional detail on this route. Use the map below to calculate how to arrive to the main town from your zipcode.

No Accident Reports



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Protecting Access to New Hampshire Rivers

Robert Nasdor

Northeast boaters can celebrate that another beloved whitewater gem has been protected. Paddlers on the Winnipeseaukee River are now assured that the put-in on the Lower Winni in Northfield, NH will be forever protected thanks to the donation of a parcel from Gloria Blais in memory of her husband Roger. Gloria donated the land to the Town of Northfield for the purpose of assuring that future generations of boaters will have access to the river. Protecting river access to the Winni is part of an ongoing effort by AW in the northeast region to protect river access.

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Bellows Falls (VT) Flow Study Reveals Hidden Whitewater

Robert Nasdor

A hardy group of northeast boaters climbed into the natural river channel below a hydropower dam to participate in a flow study designed to assess whether whitewater flows should be restored to this dewatered river reach on the Connecticut River. While significant obstacles remain, this site has the potential for providing instruction, playboating, and a big water feature that that could be run throughout much of the year and provide a much needed boost to the local economy. 

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AW, MVP Protect Land and Access on the Contoocook River (NH)

Robert Nasdor

American Whitewater and Merrimack Valley Paddlers have reached an agreement to purchase a 10-acre parcel fronting on Contoocook River in Henniker, NH. The land serves as an important launch point for whitewater paddlers enjoying the popular section of the river that runs from Hillsborough to Henniker. This section of the Contoocook River contains rapids ranging in difficulty from Class II to Class IV.


Matt Muir


Skip Morris


Alex Barham


Revision #Revision DateAuthorComment
1198496 10/28/10 Matt Muir Added lat/long coords, text from Jan W., sig photo, and abstract.
1200096 05/13/11 Skip Morris
1209394 05/01/18 Alex Barham Gauge and Info
1200097 05/13/11 Skip Morris
1193902 11/05/06 n/a n/a