Loch Highland Lake (lower) Dam
Loch Highland Lake (lower) Dam is an earth dam located in Cobb County, Georgia, built in 1973. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Loch Highland Lake (lower) Dam
The primary purpose of Loch Highland Lake (lower) Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Cobb County Board Of Commissioners;loch Highland Homeowners Association (local government). It impounds the Sweat Mountain Creek near Roswell.
The dam stands 28 feet tall and stretches 390 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 560 acre-feet, and collects water from a drainage area of 2,333 square miles. Completed in 1973, 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. 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 02/09/2016. That was 10 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
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 | Cobb |
| Nearest City | Roswell |
| River/Stream | Sweat Mountain Creek |
| Coordinates | 34.04215, -84.42210 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 390 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 560 acre-ft |
| Max Storage | 560 acre-ft |
| Normal Storage | 288 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 2,333 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Cobb County Board of Commissioners;Loch Highland Homeowners Association |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/09/2016 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | GA03866 |
| Federal ID | GA03866 |
| More Info | State Dam Safety Program |