Merrimack, New Hampshire, US
|Usual Difficulty||I-II+(III) (for normal flows)|
|Avg. Gradient||4 fpm|
|Max Gradient||10 fpm|
|MERRIMACK R NR GOFFS FALLS, BELOW MANCHESTER, NH|
|usgs-01092000||900 - 11000 cfs||I-II+(III)||01h12m||2840 cfs (running)|
The Merrimack river through Manchester is more popular for it's three play spots (Arms Park
aka Crack Pipe, 293, and Goffs Falls) rather than a river run. However, this section does provide
water at a time of year when practically every other river within 100 miles is too low. The
scenery is poor since it runs through the heart of Manchesters mill district.
The manmade canyon created by the buildings from the Amoskeag mills have a lot of history. In the early 20th century these mills produced more woolen products than anyplace else in the world. As a result the river has been diverted, altered, and built upon creating an unnatural river environment. The parking lot located at Arms Park was the site of the Arms Manufacturing Company. Up to the anthrax outbreak in the fall of 2001, Arms Manufacturing had the reputation of having the worse anthrax death toll in the United States. In 1957 four people died of inhalation anthrax on goat hides, as it was used in their manufacturing process. The building was so contaminated with anthrax it had to be torn down, burned, and buried.
During times of heavy rains such as just after a thunderstorm the Manchester storm sewage drains are overwhelmed and dump directly into the river. This is especially noticeable at and below 293 bridge rapid. Normally (outside of times of CSO -- Combined Sewer Overflow) the water quality is not bad and according to the EPA it is ok for swimming.
Check out the Amoskeag fish ladder at the put in. There is an interpretative center there showing the migratory habits of andromonous fish such as Salmon, eel, and shad. The fish ladder is usually active in late May and early June.
During high runoff periods when water tops over the dam, there are three 1/4 mile long class V channels that flow out from below the dam. Access and scouting is best from the east side of the river behind some mill buildings. At the time of this write up access was difficult because of construction on that side of the river.
Put in elevation........126' Take out elevation......104' Total drop..............22' Average drop/mile.......4' Distance................5.3 miles River width average.....200' River geology...........schists, small boulders, some ledge especially at 293 River water quality.....poor to neutral; clarity: neutral to dark. Sewage treatment plant at 293. Sewer overflows during heavy rains. Scenery.................Poor, urban historic (early industrial) Wildlife................Salmon, shad, eel, merganzers, Bald eagles near take out.
Interstate 93 to Interstate 293. Bear right after crossing the Merrimack in order to stay on
approximately 4 miles to exit 6.
As soon as you come off the exit and merge onto a rotary take your immediate right into the Ramada Inn parking area.
Park close to the entrance to the parking area.
To put in carry along the fence line around the electrical substation parrallel to the exit you just drove on.
Eventually a trail will be obvious to take you to the put in below.
Head back in the direction you came on Interstate 293 toward Nashua.
4 miles take the exit for state route 101.
As soon as you merge onto 101 take the next exit just pass the bridge onto state route 3.
Take a right at the bottom of the ramp.
Head south on route 3 for approximately 1.5 miles.
Take a left at Moores Crossing Road.
Park at the end of the road, the take out is just to the left after a short walk along the railroad tracks. (caution this is an active rail line)
|Mile||Rapid Name||Class||Features (Legend)|
|1.0||Arms Park (aka Crack Pipe)||II|
|4.0||293 Bridge (Griffins Falls)||II+|
Jim Cavo wrote: Approx. 1/4 mile of class-II rapid. The river is bordered by a high seawall and access is limited. The putin and takeout are at Arms Park, at the large steps along the seawall. There are plans to install permanent putin steps upstream.
There are numerous permanently installed slalom gates, and many well defined eddies making this a good site for practicing slalom and attainment. Unfortunately, the play wave/hole described in Appalachian Whitewater was almost entirely washed away in high water several years ago.
Flow is controlled by Amoskeag Dam, but runs most afternoons and evenings. There's a good brew-pub adjacent to the park.
Directions: From Rt. 293 take Exit 6. Cross river on Granite Street. After crossing river, take first left onto Commercial Street and follow Arms Park signs; the park is about a mile ahead under a large bridge.
Currently the most popular play spot for play boaters. 293 is located directly below the interstate 293 overpass. At low through medium levels the river splits around a small rocky island. The river right channel is narrower. It has a nice surfing wave at low levels. On river left there are a variety of holes and waves for playing. Most boaters believe this section is best at river levels of 6000 to 8000 cfs. There is a sewage treatment plant located on the river left bank of the rapid.
If you are only interested in this segment of river, park on river right below 293 bridge. Take interstate 93 to Interstate 293, 101. Once you cross over the Merrimack stay on Route 101 by staying left where 293 exits to the right. Take the next exit for Route 3 after the exit for southbound Everett Turnpike. Take a right at the end of the ramp. After .7 miles take a left just after the Everett Turnpike overpass (road not signed). Go to the end of the road and park by the river.