Hil7 is an earth dam located in Hillsborough, Florida. It carries a Undetermined hazard potential classification.
Dam profile
NID height · 13 ft13 ft tall and 4,752 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 Hil7
The primary purpose of Hil7 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 Tampa.
The dam stands 13 feet tall and stretches 4,752 feet across, creates a reservoir covering 36 acres, and has a maximum storage capacity of 889 acre-feet.
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Location
| State | Florida |
| County | Hillsborough |
| Nearest City | Tampa |
| River/Stream | Unnamed Pond |
| Coordinates | 27.84033, -82.39042 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 4,752 ft |
Storage & Hydraulics
| NID Storage | 889 acre-ft |
| Max Storage | 889 acre-ft |
| Normal Storage | 264 acre-ft |
| Surface Area | 36 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 | FL12023 |
| Federal ID | FL12023 |
| More Info | State Dam Safety Program |