Miry Branch Dam
Miry Branch Dam is an earth dam located in Johnston County, North Carolina. It carries a High hazard potential classification and has a poor condition assessment.
About Miry Branch Dam
The primary purpose of Miry Branch 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 Janet Murphy Bradley Life Estate (private).
The dam stands 21 feet tall and stretches 625 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 27 acre-feet, and collects water from a drainage area of 0 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 02/17/2025.
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 North Carolina 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 | North Carolina |
| County | Johnston |
| Coordinates | 35.59360, -78.58190 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Length | 625 ft |
Storage & Hydraulics
| NID Storage | 27 acre-ft |
| Max Storage | 27 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Janet Murphy Bradley Life Estate |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 02/17/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NC05958 |
| Federal ID | NC05958 |
| More Info | State Dam Safety Program |