Control Structure 5 Reservoir Report

Last Updated: December 5, 2025

Control Structure 5, also known as Cheney Dam, is a vital water management infrastructure located in Orlando, Florida.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1970, this gravity-type dam stands at a height of 29 feet and serves the primary purpose of flood risk reduction. With a storage capacity of 31 acre-feet and a maximum discharge rate of 2580 cubic feet per second, Control Structure 5 plays a crucial role in safeguarding the surrounding area from potential flooding events.

Managed by the local government, Control Structure 5 is regulated, permitted, inspected, and enforced by the state authorities to ensure its proper functioning and safety. The dam is situated on the TR-Little Econlockhatchee river and covers a surface area of 34 acres. Despite its high hazard potential, Control Structure 5 has been assessed to be in satisfactory condition as of the last inspection in August 2014. With a history of effective flood risk reduction and irrigation support, this infrastructure remains a key component of water resource management in the region.

Control Structure 5 is not only a critical flood control measure but also supports irrigation activities in the surrounding area. With its strategic location and effective design, this dam exemplifies the importance of proper water management infrastructure in mitigating the impacts of extreme weather events and ensuring the sustainable use of water resources. As a key player in the water management network of Orange County, Florida, Control Structure 5 continues to play a crucial role in protecting the local community and environment from potential water-related risks.

Year Completed

1970

Dam Length

100

Dam Height

29

River Or Stream

TR-LITTLE ECONLOCKHATCHEE

Primary Dam Type

Gravity

Surface Area

34

Hydraulic Height

29

Nid Storage

31

Structural Height

28

Hazard Potential

High

Nid Height

29
       
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.