Twin Lakes Dam
Twin Lakes Dam is a dam located in Orangeburg County, South Carolina, built in 1950. It carries a Significant hazard potential classification and has a poor condition assessment.
About Twin Lakes Dam
The primary purpose of Twin Lakes Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Twin Lakes Association (private). It impounds the Tr-roberts Swamp.
The dam stands 20 feet tall, creates a reservoir covering 30 acres, and has a maximum storage capacity of 272 acre-feet. Completed in 1950, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 04/10/2024.
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Location
| State | South Carolina |
| County | Orangeburg |
| River/Stream | Tr-roberts Swamp |
| Coordinates | 33.48820, -81.07510 |
Physical Characteristics
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 272 acre-ft |
| Max Storage | 272 acre-ft |
| Normal Storage | 213 acre-ft |
| Surface Area | 30 acres |
Ownership & Safety
| Purpose | Recreation |
| Owner | TWIN LAKES ASSOCIATION |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/10/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | SCD03731 |
| Federal ID | SCD03731 |
| More Info | State Dam Safety Program |