Kingsford O South is an earth dam located in Polk County, Florida, built in 1969. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 8,575 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 Kingsford O South
The primary purpose of Kingsford O South 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 Alafia River near Keysville.
The dam stands 17 feet tall and stretches 8,575 feet across, creates a reservoir covering 70 acres, has a maximum storage capacity of 800 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1969, 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. The most recent inspection on record was 01/20/2006. That was over 20 years ago.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Keysville |
| River/Stream | Alafia River |
| Coordinates | 27.76560, -82.00170 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 15 ft |
| Dam Length | 8,575 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 800 acre-ft |
| Max Storage | 800 acre-ft |
| Normal Storage | 700 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 6 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Tailings |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/20/2006 |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL13339 |
| Federal ID | FL13339 |
| More Info | State Dam Safety Program |