Watson Sa No 11 Phase 1
Watson Sa No 11 Phase 1 is an earth dam located in Polk County, Florida, built in 1974. It carries a Low hazard potential classification.
About Watson Sa No 11 Phase 1
The primary purpose of Watson Sa No 11 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 Fort Meade.
The dam stands 37 feet tall and stretches 16,450 feet across, creates a reservoir covering 167 acres, and has a maximum storage capacity of 3,159 acre-feet. Completed in 1974, 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 37 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Fort Meade |
| River/Stream | Unnamed Pond |
| Coordinates | 27.73000, -81.75000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 16,450 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 3,159 acre-ft |
| Max Storage | 3,159 acre-ft |
| Normal Storage | 3,159 acre-ft |
| Surface Area | 167 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 | FL00233 |
| Federal ID | FL00233 |
| More Info | State Dam Safety Program |