K-8

K-8 is an earth dam located in Hillsborough, Florida. It carries a Significant hazard potential classification.

About K-8

The primary purpose of K-8 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 Unnamed Pond near Mulberry.

The dam stands 6 feet tall, creates a reservoir covering 5,000 acres, and has a maximum storage capacity of 30,000 acre-feet.

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.

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Significant HazardNot Rated ConditionEmergency Action Plan: No

Location

StateFlorida
CountyHillsborough
Nearest CityMulberry
River/StreamUnnamed Pond
Coordinates27.81000, -82.06000

Physical Characteristics

Dam TypeEarth
NID Height6 ft
Dam Height6 ft

Storage & Hydraulics

NID Storage30,000 acre-ft
Max Storage30,000 acre-ft
Surface Area5,000 acres
Spillway TypeUncontrolled

Ownership & Safety

PurposeTailings
OwnerTHE MOSAIC COMPANY
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Emergency Action PlanNo

Identifiers

NID IDFL83456
Federal IDFL83456
More InfoState Dam Safety Program

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