St. Marys River at Decatur, IN
Is St. Marys River at Decatur, IN flooding right now?
St. Marys River at Decatur, IN measured 22.38 ft on 2026-09-22 21:15:00 UTC. That observation was 5.4 ft above its 17 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
22.38 ft
Streamflow
8,500 cfs
Minor flooding here begins at 17 ft, with major flooding at 24 ft. The highest crest on record was 26.92 ft on Wed, Jul 9, 2003.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 13 ft | 9.4 ft ABOVE |
| Minor flood | 17 ft | 5.4 ft ABOVE |
| Moderate flood | 20 ft | 2.4 ft ABOVE |
| Major flood | 24 ft | 1.6 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 26.92 ft | 2003-07-09 |
| 25.11 ft | 2015-06-18 |
| 24.4 ft | 1982-03-14 |
| 24.31 ft | 1985-02-25 |
| 24.22 ft | 1959-02-10 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| St. Marys River at Pleasant Mills, IN | 6.9 mi | Adams County |
| Blue Creek near Pleasant Mills, IN | 9.2 mi | Adams County |
| St Marys River at Walcot Street at Willshire OH | 10.3 mi | Van Wert County |
| St. Marys River near Fort Wayne, IN | 13.3 mi | Allen County |
| Wabash River near Bluffton, IN | 13.3 mi | Wells County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.