Major Flood
4.5 ft
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
This is an NWS forecast point (LID: RATF1). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
3 ft
Minor Flood
2 ft
Action Stage
1.5 ft
What Floods at Each Level
6 ft
Widespread flooding of residential areas on the eastern end of St. George Island.
5.5 ft
Water crosses Gulf Beach Drive in several spots east of 11th Street.
4.5 ft
Most homes north of Gulf Beach Drive and Pine Avenue are surrounded by water.
3.5 ft
Some flooding of Gulf Beach Drive begins near the entrance to St. George Island State Park.
3 ft
Water approaches Gulf Beach Drive just outside the entrance to St. George Island State Park. Water begins surrounding homes on the bay shore east of 11th Street.
2.5 ft
Water surrounds homes north of Pine Avenue.
2 ft
Some minor flooding begins along and north of Pine Avenue. The Youth Camp boat ramp area floods.
1.5 ft
Wetland flooding begins on the bay side of the east end of St. George Island.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Sep 27, 2024 | 3.97 ft | — |
About This Gauge
NWS LID
RATF1
River
St George Island
County
Franklin, FL
Coordinates
29.6905°N, 84.7910°W
Get Flood Alerts for St George Island
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 George Island at Rattlesnake Cove (in MHHW)?
The St George Island at Rattlesnake Cove (in MHHW) gauge is maintained by USGS 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 George Island at Rattlesnake Cove (in MHHW)?
The NWS-defined flood stage for St George Island at Rattlesnake Cove (in MHHW) is 2 feet. Action stage begins at 1.5 feet. Moderate flooding starts at 3 feet, and major flooding at 4.5 feet.
How do I get alerts when St George Island rises?
Download StormCast free on Google Play, go to River Gauges, and add St George Island at Rattlesnake Cove (in MHHW) to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the St George Island at Rattlesnake Cove (in MHHW) gauge located?
The gauge is located in Franklin County, Florida at coordinates 29.6905°N, 84.7910°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on St George Island
More Resources
Source & Notes
Data provided by: Courtesy of Florida Department of Environmental Protection
- Water levels are referenced to the Mean Higher High Water (MHHW) Datum. This datum can be used to approximate sea water inundation of normally dry ground near the coast. For specific impacts, please refer to the statements on this page.