River cleanup on the Saranac is stopping boaters from getting on the water this summer.
A new dam is being built to divert water from a section of the river to allow workers to clean a contaminated area.
The cleanup started in the Spring of 2010 after contaminated sediment spread from an old coal tar pit belonging to a gas-plant manufacturer.
The new dam is being built with steel and concrete placed in the middle of the river. Police say everyone in the water is prohibited from the river construction zone.
There are exits made just north of the construction site for people in the river this summer. But police warn anyone getting in the river to enjoy themselves while following the rules for the safety of themselves and the construction workers.
"People want to be in the water. The problem is, they're out there with backhoes, they're out there with massive concrete blocks and steel girders, and they actually have their contractors working in the water. So people coming through, especially on tubes which is hard to steer, could really hurt someone, could hurt the workers, could hurt people using the river," said Captain Michael Branch with the Plattsburgh Police Department.
Officials say this section of the river will be closed for the duration of summer.