Fgh3 Fort Green Mine Reservoir Report
Nearby: Fgh2 Fort Green Mine Pol12
Last Updated: December 5, 2025
Fgh3 Fort Green Mine, located in Duettes, Florida, is a privately-owned tailings dam that was completed in 1980.
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Summary
This dam, primarily designed by Ardaman & Associates, stands at a height of 40 feet with a hydraulic height of 35 feet and a structural height of 42 feet. It serves the purpose of tailings storage and has a storage capacity of 38,000 acre-feet, with a normal storage capacity of 35,000 acre-feet.
The dam overlooks Horse Creek and has a controlled spillway with a width of 80 feet. With a significant hazard potential and a very high risk assessment rating (1), Fgh3 Fort Green Mine is under state regulation by the Florida Department of Environmental Protection. Although the dam has not been rated for its condition assessment, it undergoes regular state inspections, with the last inspection conducted in January 2006. The surrounding area has a drainage area of 1.56 square miles and a maximum discharge capacity of 60 cubic feet per second.
For water resource and climate enthusiasts, Fgh3 Fort Green Mine presents an intriguing case study in dam construction and management. With its unique design features and risk profile, this privately-owned dam serves as a focal point for understanding the intersection of human activities with natural water systems. As efforts continue to monitor and regulate the dam's operation, it offers valuable insights into the challenges and responsibilities associated with maintaining water infrastructure in a changing climate.
Year Completed |
1980 |
Dam Length |
28790 |
Dam Height |
40 |
River Or Stream |
HORSE CREEK |
Primary Dam Type |
Earth |
Surface Area |
1000 |
Hydraulic Height |
35 |
Drainage Area |
1.56 |
Nid Storage |
38000 |
Structural Height |
42 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
42 |
Seasonal Comparison
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Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Fgh3 Fort Green Mine