S-179 Reservoir Report

Nearby: S-166 S-165

Last Updated: December 5, 2025

S-179, located in Miami-Dade County, Florida, is a state-regulated dam with a primary purpose of flood risk reduction along the Mowry Canal (C-103).


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Summary

Built in 1967, this dam stands at 32 feet high and has a storage capacity of 812 acre-feet, with a normal storage of 788 acre-feet. Despite its low hazard potential, the condition assessment for S-179 is currently rated as 'Not Rated', indicating a need for further evaluation to ensure its structural integrity and safety.

Managed by the state of Florida, S-179 is equipped with state permitting, inspection, and enforcement processes in place to oversee its operations. The dam has not been modified in recent years, and its emergency action plan (EAP) status, risk assessment, and risk management measures are currently not available. With a last inspection date recorded in 1905, there is a potential need for updated assessments and emergency preparedness plans to ensure the continued safety and effectiveness of this flood control structure in the face of evolving climate conditions and water resource management challenges.

With a surface area of 25 acres and a maximum discharge capacity of 1920 cubic feet per second, S-179 plays a critical role in flood control efforts in the region. As climate change continues to impact water resources and extreme weather events become more frequent, the importance of maintaining and updating infrastructure like S-179 to mitigate flood risks and protect local communities becomes increasingly vital. It is essential for stakeholders and regulatory agencies to prioritize the assessment, maintenance, and improvement of structures like S-179 to adapt to changing climate conditions and ensure the long-term resilience of water resource management systems.

Year Completed

1967

Dam Length

64

Dam Height

32

River Or Stream

MOWRY CANAL (C-103)

Primary Dam Type

Other

Surface Area

25

Hydraulic Height

32

Nid Storage

812

Structural Height

13

Hazard Potential

Low

Nid Height

32
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.