Nichols Cooling Pond Wa

Nichols Cooling Pond Wa is an earth dam located in Polk County, Florida, built in 1990. It carries a Significant hazard potential classification.

Hazard potentialSignificantFailure could cause major damage
ConditionNot assessed
Emergency action planOn file
Last inspection01/20/2006
Height27 ft
Built199036 years ago

Dam profile

NID height · 27 ft
27 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

27 ft tall and 5,000 ft long, taller than 59% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.

About Nichols Cooling Pond Wa

The primary purpose of Nichols Cooling Pond Wa 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 Alafia River near Mulberry.

The dam stands 27 feet tall and stretches 5,000 feet across, creates a reservoir covering 37 acres, has a maximum storage capacity of 850 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1990, the structure is 36 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 01/20/2006. That was over 20 years ago.

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Location

StateFlorida
CountyPolk
Nearest CityMulberry
River/StreamAlafia River
Coordinates27.87560, -82.04370

Physical Characteristics

Dam TypeEarth
NID Height27 ft
Dam Height25 ft
Dam Length5,000 ft
Year Completed1990 (36 years old)

Storage & Hydraulics

NID Storage850 acre-ft
Max Storage850 acre-ft
Normal Storage740 acre-ft
Surface Area37 acres
Drainage Area0 sq mi
Max Discharge10 cfs
Spillway TypeNone

Ownership & Safety

PurposeTailings
OwnerThe Mosaic Company
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot assessed
Last Inspection01/20/2006
Emergency Action PlanYes

Identifiers

NID IDFL10114
Federal IDFL10114
More InfoState Dam Safety Program