Temple Terrace Cell G

Temple Terrace Cell G is an earth dam located in Hillsborough, Florida, built in 1975. It carries a Significant hazard potential classification.

About Temple Terrace Cell G

The primary purpose of Temple Terrace Cell G 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 Hillsborough River near Temple Terrace.

The dam stands 80 feet tall and stretches 4,508 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 850 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 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 09/07/2005. That was over 20 years ago.

At 80 feet, this dam is taller than 97% of all dams in the United States.

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Significant HazardNot Rated ConditionEmergency Action Plan: Yes

Location

StateFlorida
CountyHillsborough
Nearest CityTemple Terrace
River/StreamHillsborough River
Coordinates28.15470, -82.12720

Physical Characteristics

Dam TypeEarth
NID Height80 ft
Dam Height75 ft
Dam Length4,508 ft
Year Completed1975 (51 years old)

Storage & Hydraulics

NID Storage850 acre-ft
Max Storage850 acre-ft
Normal Storage750 acre-ft
Surface Area15 acres
Drainage Area0 sq mi
Max Discharge64 cfs
Spillway TypeControlled

Ownership & Safety

PurposeTailings
OwnerTHE MOSAIC COMPANY
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection09/07/2005
Emergency Action PlanYes

Identifiers

NID IDFL10116
Federal IDFL10116
More InfoState Dam Safety Program

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