Fort Green Fg-3 is an earth dam located in Polk County, Florida, built in 1979. It carries a Significant hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 13,550 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Fort Green Fg-3
The primary purpose of Fort Green Fg-3 is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by The Mosaic Company (private). It impounds the Payne Creek near Fort Green.
The dam stands 17 feet tall and stretches 13,550 feet across, creates a reservoir covering 465 acres, and has a maximum storage capacity of 7,905 acre-feet. Completed in 1979, the structure is 47 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Fort Green |
| River/Stream | Payne Creek |
| Coordinates | 27.70000, -82.00000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 13,550 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 7,905 acre-ft |
| Max Storage | 7,905 acre-ft |
| Normal Storage | 7,905 acre-ft |
| Surface Area | 465 acres |
| Max Discharge | 220 cfs |
Ownership & Safety
| Purpose | Tailings |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00573 |
| Federal ID | FL00573 |
| More Info | State Dam Safety Program |