Hil8 is an earth dam located in Hillsborough, Florida. It carries a Undetermined hazard potential classification.
Dam profile
NID height · 44 ft44 ft tall and 5,388 ft long, taller than 89% of U.S. dams with a recorded height. 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 Hil8
The primary purpose of Hil8 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 Tampa.
The dam stands 44 feet tall and stretches 5,388 feet across, creates a reservoir covering 36 acres, and has a storage capacity of 277 acre-feet.
At 44 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Florida |
| County | Hillsborough |
| Nearest City | Tampa |
| River/Stream | Unnamed Pond |
| Coordinates | 27.85024, -82.39429 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 44 ft |
| Dam Height | 44 ft |
| Dam Length | 5,388 ft |
Storage & Hydraulics
| NID Storage | 277 acre-ft |
| Normal Storage | 277 acre-ft |
| Surface Area | 36 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 | FL12024 |
| Federal ID | FL12024 |
| More Info | State Dam Safety Program |