Control Structure 4
Control Structure 4 is an earth dam located in Orange County, Florida, built in 1966. It carries a High hazard potential classification.
About Control Structure 4
The primary purpose of Control Structure 4 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Orange County Stormwater Management Division (local government). It impounds the Little Econ River near Orlando.
The dam stands 17 feet tall and stretches 120 feet across, creates a reservoir covering 80 acres, and has a maximum storage capacity of 282 acre-feet. Completed in 1966, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Florida dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Florida |
| County | Orange |
| Nearest City | Orlando |
| River/Stream | Little Econ River |
| Coordinates | 28.57459, -81.26960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 120 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 282 acre-ft |
| Max Storage | 282 acre-ft |
| Normal Storage | 180 acre-ft |
| Surface Area | 80 acres |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | ORANGE COUNTY STORMWATER MANAGEMENT DIVISION |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | FL00161 |
| Federal ID | FL00161 |
| More Info | State Dam Safety Program |