Active No flood stage data USGS

Grand Lake St Marys Near Celina Oh

Updated August 3, 2026 at 11:15:00 AM EDT · ProvisionalUSGS real-time data that has not finished review. Values can be revised, corrected, or removed after approval. · Site 403204084342601

Current conditions

Historical trends

Hourly measurements

Detailed readings by hour, organized by day

Nearby stations

Other monitoring locations nearby

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Data courtesy of the U.S. Geological Survey.