Dams in St. Johns County, Florida
6Total Dams
2High Hazard
1Significant
Dam Safety in St. Johns County, Florida
St. Johns County has 6 dams tracked in the National Inventory of Dams. Of these, 2 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification.
The most common purpose is flood risk reduction. The tallest dam is Stj04 at 21 ft.
Explore more: Oldest dams in Florida · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Stj04 | High | Not Rated | 21 | Other | |
| Stj05 | High | Fair | 7 | Flood Risk Reduction | |
| Lake Vedra Dam | Significant | Fair | 12 | Flood Risk Reduction | |
| Stj03 | Low | Not Rated | 11 | Flood Risk Reduction | |
| Deep Creek West | Low | Fair | 10 | Flood Risk Reduction | |
| Stj01 | Undetermined | Not Rated | 19 |