St. Lawrence River levels rapidly rising today September 24, 2024 News, Premium The Long Sault Dam, as seen in this May 2017 file photo. (International Lake Ontario-St. Lawrence River Board/Facebook via Newswatch Group) This is content for Cornwall Newswatch Premium subscribers. Subscribe now for as little as $5.99 a month! You'll have access to the latest breaking news and original reporting in Cornwall and the Seaway Valley. Click here to subscribe. Username or E-mail Password Remember Me Forgot Password International Lake Ontario-St. Lawrence River BoardLake St. LawrenceMoses-Saunders Power DamSt. Lawrence River