S-166 Reservoir Report

Nearby: S-165 S-179

Last Updated: December 5, 2025

S-166, located in NARANJA, Miami-Dade, Florida, is a state-regulated dam on the MOWRY CANAL (C-103(N)).


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1967, this dam primarily serves the purpose of flood risk reduction, standing at a height of 23 feet and stretching a length of 60 feet. With a storage capacity of 92 acre-feet, S-166 has a low hazard potential and has not been rated for its condition assessment. The last inspection date recorded was back in 1905, with no recent updates on the emergency action plan or risk management measures.

Although the dam is state-regulated and permitted, it lacks recent inspection data and emergency preparedness information. The structure is under the ownership of the state of Florida and falls under the jurisdiction of the Jacksonville District of the US Army Corps of Engineers. The dam has a maximum discharge capacity of 420 cubic feet per second and a normal storage capacity of 88 acre-feet, covering a surface area of 4 acres. Despite its age, S-166 continues to play a crucial role in mitigating flood risks in the region.

As water resource and climate enthusiasts monitor the status of dams like S-166, it is important for regulatory agencies to prioritize regular inspections and updates to emergency preparedness plans. With the potential for increased extreme weather events due to climate change, maintaining the integrity and functionality of flood risk reduction structures like S-166 is essential for protecting communities and ecosystems in Miami-Dade, Florida. As efforts to address climate resilience and water resource management continue, the safety and effectiveness of dams like S-166 will be key considerations for sustainable development in the region.

Year Completed

1967

Dam Length

60

Dam Height

23

River Or Stream

MOWRY CANAL (C-103(N))

Primary Dam Type

Other

Surface Area

4

Hydraulic Height

23

Nid Storage

92

Structural Height

9

Hazard Potential

Low

Nid Height

23
       
Seasonal Comparison

Weather Forecast

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.