South Pierce Chem Works Gypsum

UNNAMED POND· Polk, Florida· Built 1964· Earth· 40 ft tall
Low Hazard Tailings Private

Key Takeaway

South Pierce Chem Works Gypsum is classified as low hazard in Florida. It was completed in 1964 and is 62 years old. Its primary use is tailings.

Physical Details

Dam Height 40 ft (taller than 79.9% in FL)
Dam Length14,000 ft
Dam TypeEarth
Max Storage3.4K acre-ft
Normal Storage3.4K acre-ft
Surface Area2,680 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1964 (62 years old)
NID IDFL00216

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: FDEP

Ownership

THE MOSAIC COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of South Pierce Chem Works Gypsum?

South Pierce Chem Works Gypsum is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates South Pierce Chem Works Gypsum?

South Pierce Chem Works Gypsum is owned by THE MOSAIC COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was South Pierce Chem Works Gypsum built?

South Pierce Chem Works Gypsum was completed in 1964, making it 62 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of South Pierce Chem Works Gypsum?

South Pierce Chem Works Gypsum serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is South Pierce Chem Works Gypsum?

South Pierce Chem Works Gypsum has a dam height of 40 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.