Major Flood
77.5 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
77.1 ft
Minor Flood
77 ft
Action Stage
76 ft
What Floods at Each Level
77.5 ft
Structures on the shore of Lake Marion and low lying islands are threaten by flood water.
77.09 ft
Flood water approaches roads nearest the lake.
77 ft
Flood stage - areas and beaches on Lake Marion begin to flood.
76.8 ft
Full pool
76 ft
Swamps in the upper reaches of Lake Marion begin to fill.
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 |
|---|---|---|
| Dec 18, 2009 | 76.76 ft | — |
| Dec 14, 2009 | 76.65 ft | — |
| Dec 25, 2009 | 76.64 ft | — |
About This Gauge
Get Flood Alerts for Santee 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 Santee River at Lake Marion?
The Santee River at Lake Marion gauge is maintained by USGS (site 02171000) 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 Santee River at Lake Marion?
The NWS-defined flood stage for Santee River at Lake Marion is 77 feet. Action stage begins at 76 feet. Moderate flooding starts at 77.1 feet, and major flooding at 77.5 feet.
How do I get alerts when Santee River rises?
Download StormCast free on Google Play, go to River Gauges, and add Santee River at Lake Marion 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 Santee River at Lake Marion gauge located?
The gauge is located in Berkeley County, South Carolina at coordinates 33.4495°N, 80.1644°W. USGS site number: 02171000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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On This River
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Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey
- Gauge reading affected by reservoir operations.
- 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.