Pol31 is an earth dam located in Polk County, Florida. It carries a Undetermined hazard potential classification.
Dam profile
NID height · 62 ft62 ft tall and 5,446 ft long, taller than 95% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Pol31
The primary purpose of Pol31 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 Mosaic Fertilizer LLC (private). It impounds the Unnamed Pond near Mulberry.
The dam stands 62 feet tall and stretches 5,446 feet across, creates a reservoir covering 27 acres, and has a storage capacity of 878 acre-feet.
At 62 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Mulberry |
| River/Stream | Unnamed Pond |
| Coordinates | 27.84852, -81.91884 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 62 ft |
| Dam Height | 62 ft |
| Dam Length | 5,446 ft |
Storage & Hydraulics
| NID Storage | 878 acre-ft |
| Normal Storage | 878 acre-ft |
| Surface Area | 27 acres |
Ownership & Safety
| Purpose | Tailings |
| Owner | Mosaic Fertilizer LLC |
| Owner Type | Private |
| Hazard Classification | Undetermined |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL13381 |
| Federal ID | FL13381 |
| More Info | State Dam Safety Program |