Big Sand Watershed Structure Y-32-09a Dam
Big Sand Watershed Structure Y-32-09a Dam is an earth dam located in Carroll County, Mississippi, built in 1966. It carries a High hazard potential classification and has a unsatisfactory condition assessment.
About Big Sand Watershed Structure Y-32-09a Dam
The primary purpose of Big Sand Watershed Structure Y-32-09a 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 local government-owned. It impounds the Little Sand Creek near Between Winona & Carrollton.
The dam stands 37 feet tall and stretches 2,425 feet across, creates a reservoir covering 108 acres, has a maximum storage capacity of 3,693 acre-feet, and collects water from a drainage area of 7 square miles. 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. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. An emergency action plan is in place for this dam. The most recent inspection on record was 03/28/2023.
At 37 feet, this dam is taller than 84% of dams nationwide.
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 | Carroll |
| Nearest City | Between Winona & Carrollton |
| River/Stream | Little Sand Creek |
| Coordinates | 33.48213, -89.84216 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 2,425 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 3,693 acre-ft |
| Max Storage | 3,693 acre-ft |
| Normal Storage | 722 acre-ft |
| Surface Area | 108 acres |
| Drainage Area | 7 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 03/28/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MS01056 |
| Federal ID | MS01056 |
| More Info | State Dam Safety Program |