S-49

C-23A & C-24· St. Lucie, Florida· Built 1960· Earth· 53 ft tall
Significant Hazard Flood Risk Reduction State Government

Key Takeaway

S-49 is classified as significant hazard in Florida. It was completed in 1960 and is 66 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 53 ft (taller than 89.1% in FL)
Dam Length67 ft
Dam TypeEarth
Max Storage3.4K acre-ft
Normal Storage1.8K acre-ft
Surface Area65 acres
Drainage Area0 sq mi
Max Discharge4,680 cfs
Year Completed1960 (66 years old)
NID IDFL00414

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: No
Last Inspection: July 8, 1905
State Regulated: Yes
Regulatory Agency: FDEP

Ownership

SFWMD

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of S-49?

S-49 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates S-49?

S-49 is owned by SFWMD (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was S-49 built?

S-49 was completed in 1960, making it 66 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 S-49?

S-49 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is S-49?

S-49 has a dam height of 53 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.

When was S-49 last inspected?

S-49 was last inspected on July 8, 1905. Inspection dates indicate when a formal review occurred, not the results of that inspection.

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.