Fgh1a Fort Green Mine Reservoir Report

Last Updated: December 5, 2025

Fgh1a Fort Green Mine in Hardee, Florida is a privately owned earth dam structure located on Horse Creek, with a primary purpose of tailings storage.


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Summary

Completed in 1981, this dam stands at a height of 35 feet and has a hydraulic height of 30 feet, with a maximum storage capacity of 20,000 acre-feet and a normal storage capacity of 16,980 acre-feet. The dam's spillway type is controlled, with a width of 64 feet, and it has a significant hazard potential, classified as very high risk.

Despite being not rated for condition assessment and lacking updated emergency action plans, this dam presents an intriguing case study for water resource and climate enthusiasts due to its unique design features and location in a high-risk area. With a drainage area of 0.88 square miles and a surface area of 566 acres, Fgh1a Fort Green Mine poses potential challenges for risk management and emergency response. The presence of W. Gregory Steube (R) as the congressional representative for the area adds a political dimension to the dam's regulatory oversight and enforcement processes.

Year Completed

1981

Dam Length

13975

Dam Height

35

River Or Stream

HORSE CREEK

Primary Dam Type

Earth

Surface Area

566

Hydraulic Height

30

Drainage Area

0.88

Nid Storage

20000

Structural Height

38

Hazard Potential

Significant

Foundations

Soil

Nid Height

38
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.