Hil11 is an earth dam located in Hillsborough, Florida. It carries a Undetermined hazard potential classification.
Dam profile
NID height · 13 ft13 ft tall and 3,958 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 Hil11
The primary purpose of Hil11 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 Plant City.
The dam stands 13 feet tall and stretches 3,958 feet across, creates a reservoir covering 23 acres, and has a maximum storage capacity of 4,395 acre-feet.
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Location
| State | Florida |
| County | Hillsborough |
| Nearest City | Plant City |
| River/Stream | Unnamed Pond |
| Coordinates | 28.16140, -82.13663 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 3,958 ft |
Storage & Hydraulics
| NID Storage | 4,395 acre-ft |
| Max Storage | 4,395 acre-ft |
| Normal Storage | 4,098 acre-ft |
| Surface Area | 23 acres |
Ownership & Safety
| Purpose | Tailings |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Undetermined |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL12036 |
| Federal ID | FL12036 |
| More Info | State Dam Safety Program |