St. Marys River near Macclenny
Florida — Water Level & Flood Stage
Located in Baker County, Florida on the St. Marys River. Live water level data from USGS gauge 02231000, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
19 ft
Moderate Flood
15 ft
Minor Flood
12 ft
Action Stage
10 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
20 ft
High banks on the Florida side begin to overflow. Trailers and houses along the river in Baker County are endangered. Trailers and houses on the Georgia side near Stokesville are endangered.
17 ft
High water on the river reaches the bottom of the Stokes Road Bridge.
16 ft
Access roads on both sides of the river in Florida and Georgia are flooded, including the entire low lying stretch of St. Mary's River Bluff Road on the Georgia side which cuts off 40 to 50 homes. On the Florida side, the lower end of St. Mary's Cove Road past the public boat ramp becomes flooded and cuts off access to 20 to 30 homes. The Stokes Road Bridge over the river is generally closed due to high water.
15 ft
Flooding begins to impact the lower end of Steel Bridge Road on the Florida side and cuts off access to the river gage as well as access to several homes.
14 ft
Flooding of bottomlands along the river and some lower access roads including the lower half of St. Mary's River Bluff Road which cuts off 15 to 20 homes on the Georgia side.
12 ft
Minor flooding of low lying areas and timber lands including some properties along St. Mary's River Bluff Road and the Cypress Landing Resort on the Georgia side.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jun 27, 2012 | 24.38 ft | 34,800 cfs |
| Jun 27, 2012 | 24.38 ft | 34,800 cfs |
| Sep 12, 1964 | 23.25 ft | 26,000 cfs |
| Sep 12, 1964 | 23.25 ft | 26,000 cfs |
| Apr 4, 1973 | 22.86 ft | 28,000 cfs |
About This Gauge
Get Flood Alerts for St. Marys River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of St. Marys River near Macclenny?
The St. Marys River near Macclenny gauge is maintained by USGS (site 02231000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for St. Marys River near Macclenny?
The NWS-defined flood stage for St. Marys River near Macclenny is 12 feet. Action stage begins at 10 feet. Moderate flooding starts at 15 feet, and major flooding at 19 feet.
How do I get alerts when St. Marys River rises?
Download StormCast free on Google Play, go to River Gauges, and add St. Marys River near Macclenny to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the St. Marys River near Macclenny gauge located?
The gauge is located in Baker County, Florida at coordinates 30.3586°N, 82.0817°W. USGS site number: 02231000. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.