Fort Green Fg-1
Fort Green Fg-1 is an earth dam located in Polk County, Florida, built in 1975. It carries a Significant hazard potential classification.
About Fort Green Fg-1
The primary purpose of Fort Green Fg-1 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 25 feet tall and stretches 19,000 feet across, creates a reservoir covering 503 acres, and has a maximum storage capacity of 12,575 acre-feet. Completed in 1975, the structure is well into its service life at over 50 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 | 27.67000, -82.01000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 19,000 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 12,575 acre-ft |
| Max Storage | 12,575 acre-ft |
| Normal Storage | 12,575 acre-ft |
| Surface Area | 503 acres |
| Max Discharge | 220 cfs |
Ownership & Safety
| Purpose | Tailings |
| Owner | THE MOSAIC COMPANY |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00572 |
| Federal ID | FL00572 |
| More Info | State Dam Safety Program |