Mcdonough Reservoir Dam
Mcdonough 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 Mcdonough Reservoir Dam
The primary purpose of Mcdonough 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 City Of Mcdonough (local government). It impounds the Walnut Creek.
The dam stands 35 feet tall and stretches 660 feet across, creates a reservoir covering 88 acres, has a maximum storage capacity of 1,665 acre-feet, and collects water from a drainage area of 30 square miles.
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 02/14/2019. That was 7 years ago, which is on the longer end for a high-hazard structure.
At 35 feet, this dam is taller than 82% 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 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 |
| River/Stream | Walnut Creek |
| Coordinates | 33.47917, -84.14417 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 660 ft |
Storage & Hydraulics
| NID Storage | 1,665 acre-ft |
| Max Storage | 1,665 acre-ft |
| Normal Storage | 1,100 acre-ft |
| Surface Area | 88 acres |
| Drainage Area | 30 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of McDonough |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/14/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | GA04535 |
| Federal ID | GA04535 |
| More Info | State Dam Safety Program |