Silver City Sa No 6 Phase 1
Silver City Sa No 6 Phase 1 is an earth dam located in Polk County, Florida, built in 1970. It carries a Low hazard potential classification.
About Silver City Sa No 6 Phase 1
The primary purpose of Silver City Sa No 6 Phase 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 Unnamed Pond near Agricola.
The dam stands 45 feet tall and stretches 13,000 feet across, creates a reservoir covering 78 acres, and has a maximum storage capacity of 3,892 acre-feet. Completed in 1970, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Agricola |
| River/Stream | Unnamed Pond |
| Coordinates | 27.78000, -81.91000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 13,000 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 3,892 acre-ft |
| Max Storage | 3,892 acre-ft |
| Normal Storage | 3,892 acre-ft |
| Surface Area | 78 acres |
| Max Discharge | 18 cfs |
Ownership & Safety
| Purpose | Tailings |
| Owner | THE MOSAIC COMPANY |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00213 |
| Federal ID | FL00213 |
| More Info | State Dam Safety Program |