The International Joint Commission, representing both the U.S. and Canada, released the regulatory plan yesterday.
The panel says the water levels would be allowed to be a few inches higher, on average, in spring and fall than the current regulations allow.
Similar proposals in recent years were withdrawn after protests from shoreline residents and businesses.
A leading environmental organization welcomed the new plan yesterday. Save the River, based in Clayton New York, called it a once-in-a-lifetime opportunity to restore the ecosystem.
In a press release, the group said if it’s if appropriately implemented, the plan would begin to reverse damage caused by 60 years of regulations since construction of the St. Lawrence Seaway.
The water levels of the lake and the St. Lawrence Seaway are controlled by releases from the Moses-Saunders Dam in Cornwall, Ontario.
Public hearings will be scheduled in late spring and comments taken until June 15.