The U.S. Army Corps of Engineers Detroit District weekly Great Lakes water level update dated August 7, 2026 forecast Lake Erie at 572.24 feet (IGLD 1985), which is 36 inches above chart datum. Compared with its long-term average August level, calculated over the 1918 to 2025 period of record, Lake Erie is 5 inches above average, and it is 1 inch above where it stood on August 7, 2025. The lake is 24 inches below the highest August monthly average on record, set in 2019, and 39 inches above the lowest, set in 1934. The Corps projects Lake Erie will decline about 4 inches by September 7.