Long Branch Reservoir Dam
Long Branch Reservoir Dam is an earth dam located in Henry County, Georgia. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Long Branch Reservoir Dam
The primary purpose of Long Branch Reservoir Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Henry County Water & Sewage Authority (local government). It impounds the Long Branch near Locust Grove.
The dam stands 82 feet tall, creates a reservoir covering 135 acres, and has a maximum storage capacity of 10,275 acre-feet.
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 01/27/2016. That was 10 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
At 82 feet, this dam is taller than 97% 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 Georgia 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 | Georgia |
| County | Henry |
| Nearest City | Locust Grove |
| River/Stream | Long Branch |
| Coordinates | 33.31288, -84.13172 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 82 ft |
| Dam Height | 82 ft |
Storage & Hydraulics
| NID Storage | 10,275 acre-ft |
| Max Storage | 10,275 acre-ft |
| Normal Storage | 5,560 acre-ft |
| Surface Area | 135 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Henry County Water & Sewage Authority |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/27/2016 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | GA05478 |
| Federal ID | GA05478 |
| More Info | State Dam Safety Program |