Coronet No. 5 Reservoir Report

Last Updated: December 5, 2025

Coronet No.


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Summary

5, located in Plant City, Florida, is a privately owned dam with a primary purpose of storing tailings. Built in 1930, this earth dam stands at a height of 10 feet and spans 4000 feet in length, with a storage capacity of 430 acre-feet. The dam is regulated by the Florida Department of Environmental Protection and undergoes regular inspections, with a low hazard potential rating.

Situated on the English Creek/Alafia River, Coronet No. 5 plays a crucial role in water resource management in the region, with a surface area of 47 acres and a drainage area of 0.15 square miles. The dam features a controlled spillway with a width of 2 feet, capable of discharging a maximum of 20 cubic feet per second. Despite its age, the dam's condition assessment is currently "Not Rated," highlighting the need for ongoing monitoring and maintenance to ensure its long-term stability and safety.

With a very high risk rating of 1, Coronet No. 5 serves as a focal point for climate and water resource enthusiasts interested in understanding the challenges and opportunities associated with aging infrastructure. As efforts continue to mitigate risks and enhance emergency preparedness, this dam remains a critical component of the local watershed, requiring careful stewardship to safeguard its functionality and environmental impact for future generations.

Year Completed

1930

Dam Length

4000

Dam Height

9

River Or Stream

ENGLISH CREEK / ALAFIA

Primary Dam Type

Earth

Surface Area

47

Hydraulic Height

8

Drainage Area

0.15

Nid Storage

430

Structural Height

10

Hazard Potential

Low

Nid Height

10
       
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.