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Difficulty II
Length 6 Miles
Gauge Upper Ammonoosuc-Upper
Flow Range 2200 - 4000 CFS
Flow Rate as of: 1 second ago N/A
Reach Info Last Updated 05/02/2018 2:57 pm

River Description


The Upper Ammo needs a lot water for a fluid run.  Therefore you would be hard pressed to find this river running unless everything else in the neighborhood is at or near flood stage.  The river itself is an easy class I-II at the begining and eventually builds up to a steady class II with a few small ledge drops.  Gorge-us is the most difficult section in this run.  It is recognized by a sharp right bend up against a shear granite wall on river left approximately 4.8 miles below the put-in.  Gorge-us should be considered a class II+ or III depending on level.  It is easily portaged on river right.

Be aware that most of this run is wild and a difficult bush wack back to civilization, it makes for a great northern New England wilderness experience but a nightmare if problems arise.

Rapid Descriptions

Gorge-Us

Class - III Mile - 4.8

4.8 miles from the put in you will come across a few more difficult and tightly spaced ledge drops of about 1 to 2 feet.  When you see the river take a sharp right up against the granite wall on river left take on on river right to scout and/or portage.  The rapid itself is only 30 yards long but drops steeply with three or more large hole / waves in the center flow.  You can sneak the right side but look out for shallow rocks that could push you back into the main flow.  The tail end of the rapid produces some nice symetrical surfing waves with a good access eddy on both sides.

Comments

Summary of Gauge Readings

The Upper Ammonoosuc has a gage several miles downstream in Groveton NH.  It is estimated that a minimum run should be about 2200 cfs on the gage for a fluid run up river. 

Gauge NameReadingTimeComment
Upper Ammonoosuc-Upper
AW Gauge Info
N/A Be aware that this gage is situated several miles downstream from the run. Use this as a rough estimate of runnability. If other rivers in the area are at or
UPPER AMMONOOSUC RIVER NEAR GROVETON, NH
AW Gauge Info
727 cfs 64d06h44m We don't yet know what's a reasonable min/max level for this stream. Please help us provide the best beta by adding a comment.
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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.

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No Accident Reports

Alerts

 

News

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Protecting Access to New Hampshire Rivers

2016-11-03 13:30:00-04
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.

article main photo

Bellows Falls (VT) Flow Study Reveals Hidden Whitewater

2015-06-02 15:57:00-04
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. 

article main photo

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

2013-06-18 08:35:00-04
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.

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