The annual installation of the ice boom in the Niagara River took place on Monday.
The ice boom is installed each year at the eastern end of Lake Erie, where it empties into the Niagara River, to restrict the amount of lake ice entering the river. That helps minimize ice jams, which can damage docks and cause flooding. It also maintains water flow in the river for production of hydroelectric power.
The two-mile ice boom is a chain of floating steel pontoons strung from Buffalo to Fort Erie, Ontario. They will be removed in March.