Upper Yockanookany Ws Str 1 Dam
Upper Yockanookany Ws Str 1 Dam is an earth dam located in Choctaw County, Mississippi, built in 1975. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Upper Yockanookany Ws Str 1 Dam
The primary purpose of Upper Yockanookany Ws Str 1 Dam 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 Town Of Ackerman (local government). It impounds the Yockanookany River near Ackerman.
The dam stands 25 feet tall and stretches 755 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 249 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 08/17/2022.
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 Mississippi 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 | Mississippi |
| County | Choctaw |
| Nearest City | Ackerman |
| River/Stream | Yockanookany River |
| Coordinates | 33.32663, -89.16824 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 755 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 249 acre-ft |
| Max Storage | 249 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 5,190 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | TOWN OF ACKERMAN |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/17/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MS02797 |
| Federal ID | MS02797 |
| More Info | State Dam Safety Program |