Bark Lake, Ont. - Dam Rehabilitation
Ontario Power Generation
Riggs Engineering was retained by Nor Eng Engineering and Construction Inc. to provide engineering services for the rehabilitation of the Bark Lake Dam. The dam is located in Jones Township on the Madawaska River in northeastern Ontario.
The project involved designing a floatation cofferdam system that minimized environmental impacts. Various concrete repairs, along with new access ladders and a handrail with fall-arrest device as well as vertical slide gates (replacing the original butterfly valves) were included in the project.