Fgh1b Fort Green Mine
Fgh1b Fort Green Mine is an earth dam located in Manatee County, Florida, built in 1976. It carries a Significant hazard potential classification.
About Fgh1b Fort Green Mine
The primary purpose of Fgh1b Fort Green Mine 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 Horse Creek near Duette.
The dam stands 38 feet tall and stretches 19,600 feet across, creates a reservoir covering 560 acres, has a maximum storage capacity of 17,500 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1976, the structure is 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. An emergency action plan is in place for this dam. The most recent inspection on record was 01/23/2006. That was over 20 years ago.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Florida |
| County | Manatee |
| Nearest City | Duette |
| River/Stream | Horse Creek |
| Coordinates | 27.63770, -82.29400 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 35 ft |
| Dam Length | 19,600 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 17,500 acre-ft |
| Max Storage | 17,500 acre-ft |
| Normal Storage | 16,800 acre-ft |
| Surface Area | 560 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 30 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Tailings |
| Owner | THE MOSAIC COMPANY |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 01/23/2006 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | FL11055 |
| Federal ID | FL11055 |
| More Info | State Dam Safety Program |