Moses Saunders Dam

Lake Ontario outflows downstream now fourth highest on record

Lake Ontario outflows downstream now fourth highest on record

Joint Canada-U.S. regulators of Lake Ontario water levels say they are monitoring ice-cover conditions to ensure proper outflows from the Moses Saunders Dam into the St. Lawrence River. Outflows from Lake Ontario are higher than usual for this time of the year, said regulators. International Lake Ontario – St. Lawrence River Board said, “although flows have been reduced, the outflows remain relatively high compared to the historical record. The average Lake Ontario outflow for January 2022 is currently the fourth highest on record since 1900 (following 2020, 2021, and 1987), and the January mean Lake Ontario level is the 15th highest on record since 1918.”

St. Lawrence water levels could wash away more than $1B

St. Lawrence water levels could wash away more than $1B

Rising water levels in the St. Lawrence Seaway could cost the economy more than $1 billion, shippers and port operators say. A new study from the Chamber of Marine Commerce warns that opening the floodgates further at a dam in Cornwall, Ont., would wash away between $1 billion and $1.75 billion in revenue for businesses on both sides of the border. A board of control recently increased the flow at the Moses Saunders Dam — the only control point on the St. Lawrence Seaway, which includes the Great Lakes — to allow 10,400 cubic metres of water per second out of Lake Ontario.