SXUS83 KDTX 111352 OMRDTX GREAT LAKES WATER LEVELS NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 950 AM EDT SAT APR 11 2026 THE FOLLOWING ARE THE AVERAGE LAKE LEVELS FORECAST FOR THIS WEEK. LAKE LEVEL... INCHES FROM CHART DATUM SUPERIOR -1 MICHIGAN AND HURON 7 ST CLAIR +23 ERIE +29 ONTARIO +31 $$