Area a is an earth dam located in Hillsborough, Florida, built in 1967. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 11,550 ft long, taller than 80% 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 Area a
The primary purpose of Area a 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 Brewster.
The dam stands 35 feet tall and stretches 11,550 feet across, creates a reservoir covering 291 acres, and has a maximum storage capacity of 3,600 acre-feet. Completed in 1967, 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 35 feet, this dam is taller than 80% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Florida |
| County | Hillsborough |
| Nearest City | Brewster |
| River/Stream | Unnamed Pond |
| Coordinates | 27.73000, -82.16000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 11,550 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 3,600 acre-ft |
| Max Storage | 3,600 acre-ft |
| Normal Storage | 3,600 acre-ft |
| Surface Area | 291 acres |
Ownership & Safety
| Purpose | Tailings |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00234 |
| Federal ID | FL00234 |
| More Info | State Dam Safety Program |