Santee River at Lake Marion
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.No secondary data available. Transformations for Flow data and a secondary Y axis cannot be made at this time.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/17/2025 12:45 AM EDTRecord: 76.8 ftLow Threshold: 0 ftCATEGORY STAGE 
Major Flooding 77.5 ft Moderate Flooding 77.1 ft Minor Flooding 77 ft Action 76 ft Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions
NOTE: Forecasts are issued as needed during times of high water, but are not routinely available.
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.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 77.5 - Structures on the shore of Lake Marion and low lying islands are threaten by flood water.
- 77.09 - Flood water approaches roads nearest the lake.
- 77 - Flood stage - areas and beaches on Lake Marion begin to flood.
Gauge Location
Recent Crests
| 1. | 76.62 ft | on 02-17-2010 |
| 2. | 76.61 ft | on 02-02-2010 |
| 3. | 76.17 ft | on 01-25-2010 |
| 4. | 76.60 ft | on 01-05-2010 |
| 5. | 76.64 ft | on 12-25-2009 |
Recent Crests
| 1. | 76.62 ft | on 02-17-2010 |
| 2. | 76.61 ft | on 02-02-2010 |
| 3. | 76.17 ft | on 01-25-2010 |
| 4. | 76.60 ft | on 01-05-2010 |
| 5. | 76.64 ft | on 12-25-2009 |
| 6. | 76.76 ft | on 12-19-2009 |
| 7. | 76.65 ft | on 12-15-2009 |
| 8. | 76.60 ft | on 12-09-2009 |
| 9. | 76.61 ft | on 11-22-2009 |
Historic Crests
| 1. | 76.76 ft | on 12-19-2009 |
| 2. | 76.65 ft | on 12-15-2009 |
| 3. | 76.64 ft | on 12-25-2009 |
| 4. | 76.62 ft | on 02-17-2010 |
| 5. | 76.61 ft | on 02-02-2010 |
Historic Crests
| 1. | 76.76 ft | on 12-19-2009 |
| 2. | 76.65 ft | on 12-15-2009 |
| 3. | 76.64 ft | on 12-25-2009 |
| 4. | 76.62 ft | on 02-17-2010 |
| 5. | 76.61 ft | on 02-02-2010 |
| 6. | 76.61 ft | on 11-22-2009 |
| 7. | 76.60 ft | on 12-09-2009 |
| 8. | 76.60 ft | on 01-05-2010 |
| 9. | 76.17 ft | on 01-25-2010 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 77.50 ft |
| moderate Flooding | 77.10 ft |
| minor Flooding | 77.00 ft |
| action | 76.00 ft |
| Latest Value | 75.59 ft |
| Gauge Zero | 0.00 ft |
Gauge Photos
No Images Found
Probability Information
No Images Available
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.