Centennial Island Dam

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.