Lonesome Rougher Water Pond

Lonesome Rougher Water Pond is an earth dam located in Hillsborough, Florida, built in 1976. It carries a Low hazard potential classification.

About Lonesome Rougher Water Pond

The primary purpose of Lonesome Rougher Water Pond 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 South Prong Alafia River near Picnic.

The dam stands 22 feet tall and stretches 2,600 feet across, creates a reservoir covering 18 acres, and has a maximum storage capacity of 400 acre-feet. Completed in 1976, the structure is 50 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.

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Low HazardNot Rated ConditionEmergency Action Plan: No

Location

StateFlorida
CountyHillsborough
Nearest CityPicnic
River/StreamSouth Prong Alafia River
Coordinates27.74000, -82.11000

Physical Characteristics

Dam TypeEarth
NID Height22 ft
Dam Height22 ft
Dam Length2,600 ft
Year Completed1976 (50 years old)

Storage & Hydraulics

NID Storage400 acre-ft
Max Storage400 acre-ft
Normal Storage396 acre-ft
Surface Area18 acres
Max Discharge24 cfs

Ownership & Safety

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

Identifiers

NID IDFL00607
Federal IDFL00607
More InfoState Dam Safety Program

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