H-2 Settling Area is an earth dam located in Polk County, Florida, built in 1978. It carries a Significant hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 12,500 ft long, taller than 78% 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 H-2 Settling Area
The primary purpose of H-2 Settling Area 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 Alafia River near Brewster.
The dam stands 34 feet tall and stretches 12,500 feet across, creates a reservoir covering 324 acres, and has a maximum storage capacity of 11,000 acre-feet. Completed in 1978, the structure is 48 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.
At 34 feet, this dam is taller than 78% 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 | Polk |
| Nearest City | Brewster |
| River/Stream | Alafia River |
| Coordinates | 27.77000, -81.94000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 12,500 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 11,000 acre-ft |
| Max Storage | 11,000 acre-ft |
| Normal Storage | 3,150 acre-ft |
| Surface Area | 324 acres |
| Max Discharge | 670 cfs |
Ownership & Safety
| Purpose | Tailings |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00634 |
| Federal ID | FL00634 |
| More Info | State Dam Safety Program |