Lonesome Rougher Water Pond is an earth dam located in Hillsborough, Florida, built in 1976. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 2,600 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 Lonesome Rougher Water Pond
The primary purpose of Lonesome Rougher Water Pond 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 South Prong Alafia River near Picnic.
The dam stands 22 feet tall and stretches 2,600 feet across, creates a reservoir covering 18 acres, and has a maximum storage capacity of 400 acre-feet. Completed in 1976, the structure is 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.
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Location
| State | Florida |
| County | Hillsborough |
| Nearest City | Picnic |
| River/Stream | South Prong Alafia River |
| Coordinates | 27.74000, -82.11000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 2,600 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 400 acre-ft |
| Max Storage | 400 acre-ft |
| Normal Storage | 396 acre-ft |
| Surface Area | 18 acres |
| Max Discharge | 24 cfs |
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 | FL00607 |
| Federal ID | FL00607 |
| More Info | State Dam Safety Program |