Gambill Lake Dam Middle is an earth dam located in Forsyth County, North Carolina. It carries a High hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 278 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Gambill Lake Dam Middle
The primary purpose of Gambill Lake Dam Middle is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Gregory J Osmon (private). It impounds the Bill Branch.
The dam stands 25 feet tall and stretches 278 feet across, creates a reservoir covering 3 acres, and has a maximum storage capacity of 30 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 02/04/2025.
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 | Forsyth |
| River/Stream | Bill Branch |
| Coordinates | 36.15590, -80.36580 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Length | 278 ft |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 3 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | Gregory J Osmon |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 02/04/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NC01579 |
| Federal ID | NC01579 |
| More Info | State Dam Safety Program |