St. Marys River near Macclenny, FL
Is St. Marys River near Macclenny, FL flooding right now?
St. Marys River near Macclenny, FL measured 2.88 ft on 2026-09-22 20:45:00 UTC. That observation was 9.1 ft below its 12 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
2.88 ft
Streamflow
102 cfs
Minor flooding here begins at 12 ft, with major flooding at 19 ft. The highest crest on record was 24.38 ft on Thu, Jun 28, 2012.
Streamflow outlook
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 10 ft | 7.1 ft below |
| Minor flood | 12 ft | 9.1 ft below |
| Moderate flood | 15 ft | 12.1 ft below |
| Major flood | 19 ft | 16.1 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 24.38 ft | 2012-06-28 |
| 23.25 ft | 1964-09-13 |
| 22.86 ft | 1973-04-05 |
| 22.32 ft | 2017-09-12 |
| 22.29 ft | 1947-09-25 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| North Prong St. Marys River at Moniac, GA | 14.1 mi | Baker County |
| North Fork Black Creek near Middleburg, FL | 19.9 mi | Clay County |
| Ortega River at Kirwin Road near Jacksonville, FL | 21.8 mi | Duval County |
| Thomas Creek at Sh 115 near Callahan, Fla. | 21.8 mi | Nassau County |
| North Fork Black Creek at Middleburg, FL | 23.4 mi | Clay 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.