Fgh1a Fort Green Mine

Fgh1a Fort Green Mine is an earth dam located in Hardee County, Florida, built in 1981. It carries a Significant hazard potential classification.

About Fgh1a Fort Green Mine

The primary purpose of Fgh1a Fort Green Mine 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 Horse Creek near Duette.

The dam stands 38 feet tall and stretches 13,975 feet across, creates a reservoir covering 566 acres, has a maximum storage capacity of 20,000 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1981, the structure is 45 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 01/23/2006. That was over 20 years ago.

At 38 feet, this dam is taller than 85% of dams nationwide.

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Significant HazardNot Rated ConditionEmergency Action Plan: Yes

Location

StateFlorida
CountyHardee
Nearest CityDuette
River/StreamHorse Creek
Coordinates27.63310, -82.00360

Physical Characteristics

Dam TypeEarth
NID Height38 ft
Dam Height35 ft
Dam Length13,975 ft
Year Completed1981 (45 years old)

Storage & Hydraulics

NID Storage20,000 acre-ft
Max Storage20,000 acre-ft
Normal Storage16,980 acre-ft
Surface Area566 acres
Drainage Area0 sq mi
Max Discharge20 cfs
Spillway TypeControlled

Ownership & Safety

PurposeTailings
OwnerTHE MOSAIC COMPANY
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection01/23/2006
Emergency Action PlanYes

Identifiers

NID IDFL11057
Federal IDFL11057
More InfoState Dam Safety Program

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