S-121

CUTLER DRAIN CANAL (C-100C)· Miami-Dade, Florida· Other· 11 ft tall
Significant Hazard Flood Risk Reduction State Government

Key Takeaway

S-121 is classified as significant hazard in Florida. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 11 ft (taller than 17.7% in FL)
Dam Length0 ft
Dam TypeOther
Max Storage1.0K acre-ft
Normal Storage846 acre-ft
Surface Area94 acres
Drainage Area0 sq mi
Max Discharge0 cfs
NID IDFL00392

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: December 11, 2023
State Regulated: Yes
Regulatory Agency: FDEP

Ownership

SFWMD

State Government

Nearby Dams

S-22

Miami-Dade, FL

Low Hazard 23 ft

G93 Control Structure

Miami-Dade, FL

High Hazard 10 ft

S-148

Miami-Dade, FL

Low Hazard 20 ft

S-338

Miami-Dade, FL

Low Hazard 26 ft

G-119

Miami-Dade, FL

Low Hazard 14 ft

S-194

Miami-Dade, FL

Significant Hazard 24 ft

S-25b

Miami-Dade, FL

Low Hazard 21 ft

S-165

Miami-Dade, FL

Low Hazard 22 ft

Frequently Asked Questions

What is the hazard classification of S-121?

S-121 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-121?

S-121 is owned by SFWMD (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of S-121?

S-121 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-121?

S-121 has a dam height of 11 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-121 last inspected?

S-121 was last inspected on December 11, 2023. 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.