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Great Lakes water levels set June record highs

Detroit District
Published July 9, 2019

The U.S. Army Corps of Engineers, Detroit District, announces that that based on preliminary data, new record high monthly mean water levels were set on Lake Superior, Lake St. Clair, Lake Erie and Lake Ontario in June.

The new record June levels are between three and four inches higher than the previous records for the month, which were set in 1986 on Lakes Superior, St. Clair and Erie and in 2017 on Lake Ontario. The records for lakes St. Clair, Erie and Ontario are the highest for any month dating back to 1918. Lake Michigan-Huron was less than one inch from its June record. Additional record high water levels are possible on all the Great Lakes and Lake St. Clair this summer.

“With another wet month across the Great Lakes basin, water levels continued to rise in June and have reached some of the highest levels in our recorded history, which dates back to 1918,” said Keith Kompoltowicz, chief of Watershed Hydrology, Detroit District.  

Wet weather continued in June, which allowed water supplies to the lakes to remain high. June was the third consecutive month with above average precipitation across the Great Lake basin as a whole. This persistently wet weather has also allowed stream flows into the Great Lakes to remain well above average for this time of year. 

The U.S. Army Corps of Engineers, Detroit District, in coordination with partners in Environment and Climate Change Canada, release the official six month forecast for the Great Lakes. This Monthly Bulletin of Water Levels for the Great Lakes is complete at the beginning of each month, with the latest edition covering the period from July to December. The link can be found at the end of this news release.

The Great Lakes region will continue to see the threat of coastal flooding and shoreline erosion especially during storm events. Localized water levels are often impacted by winds and can be significantly higher during storms. Water levels and flow rates in the connecting channels of the Great Lakes are also high and may, depending on winds and other atmospheric conditions, lead to localized flooding.  

The U.S. Army Corps of Engineers has authority to support communities in flood fighting by providing technical expertise, and in certain instances, provide flood fight supplies, such as sand bags and plastic sheeting. This assistance must be requested by state authorities. Communities should contact their county emergency management offices, who can begin coordination with the state and the Corps. At this time, The U.S. Army Corps of Engineers, Detroit District, is providing technical assistance to Macomb, Monroe, St. Clair and Wayne Counties in Michigan.

For additional information, contact Emily Schaefer, public affairs specialist, at 313-226-4681 or Keith Kompoltowicz, chief of Watershed Hydrology at the U.S. Army Corps of Engineers, Detroit District at 313-226-6442.

To find the Monthly Bulletin of Water Levels for the Great Lakes visit:

To find more information about international outflow regulation activities visit:



Emily Schaefer
313-410-4157 (cell)

Release no. 19-008

Chick Lock

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