Mosaic Csa Fc2c
Mosaic Csa Fc2c is an earth dam located in Hillsborough, Florida, built in 1993. It carries a Significant hazard potential classification.
About Mosaic Csa Fc2c
The primary purpose of Mosaic Csa Fc2c 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 Alderman Creek near Fort Lonesome.
The dam stands 57 feet tall and stretches 14,437 feet across, creates a reservoir covering 650 acres, has a maximum storage capacity of 34,500 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1993, the structure is 33 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 07/20/2005. That was over 20 years ago.
At 57 feet, this dam is taller than 95% of all dams in the United States.
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 | Fort Lonesome |
| River/Stream | Alderman Creek |
| Coordinates | 27.64810, -82.07230 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 57 ft |
| Dam Height | 55 ft |
| Dam Length | 14,437 ft |
| Year Completed | 1993 (33 years old) |
Storage & Hydraulics
| NID Storage | 35,500 acre-ft |
| Max Storage | 34,500 acre-ft |
| Normal Storage | 35,500 acre-ft |
| Surface Area | 650 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 640 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Tailings |
| Owner | THE MOSAIC COMPANY |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 07/20/2005 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | FL11020 |
| Federal ID | FL11020 |
| More Info | State Dam Safety Program |