International Lake Superior Board of Control
The International Lake Superior Board of Control is responsible for regulating the outflow of Lake Superior and managing the control works on the St. Marys River.
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News Releases
Latest news on Lake Superior outflows and expected conditions
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Reports
Read the Board's latest reports
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FAQs
Get your questions answered by reading the Frequently Asked Questions section
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Water Levels Data
View the latest information on Great Lakes Water Levels and Forecasts
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Calendar
View the Board's upcoming events
Want to learn more about the flow control structures on the St. Marys River? View the Board's Story Map below
