Ammonoosuc - 4. Twin Mountain to Pierce bridge


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Ammonoosuc,

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4. Twin Mountain to Pierce bridge

Usual Difficulty II-III (may vary with level)
Length 2.9 Miles
Avg. Gradient 41 fpm
Max Gradient 48 fpm

Gauge Information

Name Range Difficulty Updated Level
AMMONOOSUC RIVER AT BETHLEHEM JUNCTION, NH
usgs-01137500 3.10 - 6.00 ft II-III 02h12m 2.49 ft (rc= -0.2 )


River Description

This is a nice intermediate run in the Northern White Mountains of NH. The most difficult rapid (Boat Breaker) is at the end of this run near the take out.

Technical info 

Put in elevation........1286'
Take out elevation......1167'
Total drop..............119'
1st mile................46'
2nd mile................30'
2.9 mile................43' (48' average)
Average drop/mile.......41'
Distance................2.9 miles
River width average.....70'
River geology...........Small to medium granite boulders
River water quality.....good to excellent, clarity good.
Scenery.................Nice Mountain scenery, most of this stretch runs away
                        from the road.
Wildlife................Deer, hawks, moose, beavers.


StreamTeam Status: Verified
Last Updated: 2006-11-05 17:56:17

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Gauge Information

Gauge Description:

Historical Flow Information

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

USGS gauge located at the takeout on river left. The Ammonoosuc starts high up on Mt Washington (6288') and runs later in the season than most other White Mountain rivers. Late April and early May is generally the high water period. Forecast

River Flow information

Gauge: USGS (Bethlehem) Minimum level: 3.1?/429 cfs

Low: 3.7?/660 cfs

Medium: 5.0?/1380 cfs

High: 5.5?/1800 cfs

Waterline: 1-800-452-1737 site code: 331114

Gauge Information

Name Range Difficulty Updated Level
AMMONOOSUC RIVER AT BETHLEHEM JUNCTION, NH
usgs-01137500 3.10 - 6.00 ft II-III 02h12m 2.49 ft (rc= -0.2 )

RangeWater LevelDifficultyComment
3.10 -6.00 ft barely runnable-high runnable II-III

Report - Reports of Ammonoosuc 4. Twin Mountain to Pierce bridge and related gauges

Reports give the public a chance to report on river conditions throughout the country as well as log the history of a river.

Reports

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Guidebooks



Classic Northeastern Whitewater Guide : The Best Whitewater Runs in New England and New York
$19.95

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Rapid Descriptions

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