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.

News Release

Date

June 03, 2019

Wet conditions continued across the upper Great Lakes basin in May. Lake Superior has exceeded record high water levels for this time of year and water levels of Lake Michigan-Huron are also now approaching record high values.
News Release

Date

May 03, 2019

Water levels of Lake Superior and Lake Michigan-Huron remain well above average, and Lake Superior has the potential to reach or exceed record highs in May should wet conditions continue.
News Release

Date

April 03, 2019

The above-average levels coupled with strong winds and waves continue to result in shoreline erosion and coastal damages across the upper Great Lakes system.
News Release

Date

March 01, 2019

Very wet conditions continued across the upper Great Lakes basin in February, and water levels of Lake Superior and Lake Michigan-Huron remain well above average.

News Releases

Latest news on Lake Superior outflows and expected conditions

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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

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International Lake Superior Board of Control

News Release

News Release

News Release

News Release

News Releases

Reports

FAQs

Water Levels Data

Calendar

Want to learn more about the flow control structures on the St. Marys River? View the Board's Story Map below

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