Hil18

UNNAMED POND· Hillsborough, Florida· Earth· 12 ft tall
Unknown Tailings Private

Key Takeaway

Hil18 is classified as unknown in Florida. Its primary use is tailings.

Physical Details

Dam Height 12 ft (taller than 20.6% in FL)
Dam Length13,675 ft
Dam TypeEarth
Max Storage3.3K acre-ft
Normal Storage898 acre-ft
Surface Area67 acres
NID IDFL12033

Safety Information

Unknown

Hazard potential has not been determined.

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 Hil18?

Hil18 is classified as Unknown. Hazard potential has not been determined. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Hil18?

Hil18 is owned by THE MOSAIC COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Hil18?

Hil18 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 Hil18?

Hil18 has a dam height of 12 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.