Do Gypsum
Do Gypsum is an earth dam located in Hamilton County, Florida. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Do Gypsum
The primary purpose of Do Gypsum 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 Pcs Phosphate (private). It impounds the Swift Creek.
The dam stands 105 feet tall and stretches 20,000 feet across, creates a reservoir covering 500 acres, has a maximum storage capacity of 52,500 acre-feet, and collects water from a drainage area of 0 square miles.
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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/23/2014. That was over 11 years ago.
At 105 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Florida |
| County | Hamilton |
| River/Stream | Swift Creek |
| Coordinates | 30.43331, -82.77978 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 105 ft |
| Dam Height | 100 ft |
| Dam Length | 20,000 ft |
Storage & Hydraulics
| NID Storage | 52,500 acre-ft |
| Max Storage | 52,500 acre-ft |
| Normal Storage | 50,000 acre-ft |
| Surface Area | 500 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 110 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Tailings |
| Owner | PCS PHOSPHATE |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/23/2014 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | FL10009 |
| Federal ID | FL10009 |
| More Info | State Dam Safety Program |