SXUS83 KDTX 292032 OMRDTX GREAT LAKES WATER LEVELS NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 332 PM EST MON DEC 29 2025 THE FOLLOWING ARE THE AVERAGE LAKE LEVELS FORECAST FOR THIS WEEK. LAKE LEVEL... INCHES FROM CHART DATUM SUPERIOR -1 MICHIGAN AND HURON -1 ST CLAIR +13 ERIE +16 ONTARIO +10 $$