Mosaic Green Bay W Central Stack is an earth dam located in Polk County, Florida, built in 1975. It carries a Significant hazard potential classification.
Dam profile
NID height · 60 ft60 ft tall and 8,425 ft long, taller than 95% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Mosaic Green Bay W Central Stack
The primary purpose of Mosaic Green Bay W Central Stack 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 Peace River near Bartow.
The dam stands 60 feet tall and stretches 8,425 feet across, creates a reservoir covering 55 acres, has a maximum storage capacity of 2,200 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 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 09/07/2005. That was over 21 years ago.
At 60 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Bartow |
| River/Stream | Peace River |
| Coordinates | 27.84380, -81.92530 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 60 ft |
| Dam Height | 55 ft |
| Dam Length | 8,425 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 2,200 acre-ft |
| Max Storage | 2,200 acre-ft |
| Normal Storage | 2,000 acre-ft |
| Surface Area | 55 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 160 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Tailings |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 09/07/2005 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | FL10113 |
| Federal ID | FL10113 |
| More Info | State Dam Safety Program |