There is a wooden dam located at the south end of the channel on the left side of the island.

Peleg Spencer first built a wooden dam near the site in 1811.

The original wooden dam was replaced in 1924 by the current concrete dam.

It was big for the time, a wooden dam 625 feet wide and 16 feet high with 32 floodgates.

Though the wooden dam held, later inspections uncovered extensive structural damage.

It had been created by a massive wooden dam, constructed they felt sure with trunks taken from the denuded forest.

Driscoll Pond is contained by a small wooden dam.

Previously, a wooden dam dating to 1828 had existed at the site.

In October 2005, the site gained national attention when the mill's 1832 wooden dam threatened to collapse after heavy rains.

In 1817 a wooden dam was built to provide power for both mills and the name of the village was changed to Florence.