- Construction Date: September 2017 - November 2017
- Category: Dam Rehabilitation
In 2017 NSI’s team won the contract to rebuild of portion of the Hovey Dam along the Quinsigamond River in No. Grafton MA. A mid 19th century structure, the dam established a mill pond that once provided water power to a series of mills below the dam. As typical of old dams the original structure used the weight of the rock and mortar to build the walls. Over the past 170 years the mortar has dissolved and the rock structure was shifting. NSI constructed a cofferdam to isolate the spillway for reconstruction. The finished spillway stabilized a critical piece of infrastructure and extended the life of dam for years to come.