Grenada Dam
Grenada Dam is an earth dam located in Grenada County, Mississippi, built in 1954. It carries a High hazard potential classification.
About Grenada Dam
The primary purpose of Grenada 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 Usace - Vicksburg District (federal). It impounds the Yalobusha River near Grenada.
The dam stands 103 feet tall and stretches 13,900 feet across, creates a reservoir covering 9,800 acres, has a maximum storage capacity of 2,722,100 acre-feet, and collects water from a drainage area of 1,320 square miles. Completed in 1954, 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. The most recent inspection on record was 08/12/2025.
At 103 feet, this dam is taller than 98% of all dams in the United States.
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 | Grenada |
| Nearest City | Grenada |
| River/Stream | Yalobusha River |
| Coordinates | 33.82163, -89.77239 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 103 ft |
| Dam Height | 80 ft |
| Dam Length | 13,900 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 2,722,100 acre-ft |
| Max Storage | 2,722,100 acre-ft |
| Normal Storage | 85,700 acre-ft |
| Surface Area | 9,800 acres |
| Drainage Area | 1,320 sq mi |
| Max Discharge | 52,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - Vicksburg District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 08/12/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MS01494 |
| Federal ID | MS01494 |
| More Info | State Dam Safety Program |