Hazard Warning: Hazard information may be user-submitted and unverified. Conditions change frequently. Always scout rapids and obstacles yourself.
Hazard MA Class IV

Centennial Island Dam

Concord - City of Lowell to Merrimack River (MA)

Monitor this Rapid
Gauge Conditions
Concord River below River Meadow Brook, at Lowell, MA Downstream Primary
Runnable: 400.0 – 6,000.0 CFS
Data from American Whitewater & USGS
Photo
Centennial Island Dam
Photo courtesy of American Whitewater
Description
In between the two put-ins is dam used to divert water down the canal for the small power plant. Run the dam approximately 50 feet off the right shore where a V-shaped bend in the dam creates a channel and narrow tongue. Be aware this drop is very rocky and can be full of debris. Make sure you scout it carefully or watch someone else run it. At river levels below 6 feet the run starts to bottom out and gets rocky.

The dam (also called Wamesit Power Company Dam) completed in 1900, is owned by Wamesit Real Estate Trust. Constructed of concrete, rebar, and wooden boards, it is 320 feet long and has a height of 5 feet. Its capacity is 415 acre feet; normal storage is 75 acre feet. The fishway is 79.5' long and was opened in 1991.
Location
Type
Hazard
Difficulty
Class IV
Mile Marker
0.1 mi
Directions
Navigate
View Full Run
City of Lowell to Merrimack River
Concord
III+(IV) 2.2 mi
Hazard — Exercise extreme caution in this area.
Current Conditions
5-Day Forecast
Whitewater data from
American Whitewater